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5 Jul 2025
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GCSE Physics Electricityfundamentals explained in comprehensive detail, focusing on... Show more
This page delves into the basics of electrical charges and static electricity, which are essential concepts in GCSE Physics Static Electricity.
Static electricity occurs when an object becomes charged. The page explains the structure of atoms, including protons, neutrons, and electrons, and their respective charges.
Definition: Static electricity is the accumulation of electrical charges on the surface of an object.
The process of charging by friction is described, where electrons are transferred between insulators when rubbed together. The page also covers the forces between charged objects and the concept of electric fields.
Example: Rubbing a balloon on your hair can cause the balloon to become negatively charged and attract small pieces of paper.
The page concludes with an introduction to circuit diagrams and symbols for various components such as cells, switches, resistors, and meters.
Vocabulary:
- Cell: A device that pushes electrons around a complete circuit
- Ammeter: An instrument used to measure electric current
- Voltmeter: An instrument used to measure potential difference
This page focuses on electric current, a key concept in P4 Physics AQA and GCSE Physics Electricity revision.
Electric current is defined as the flow of charge, typically carried by electrons in metals. The page explains how current transfers energy to components in a circuit.
Definition: Electric current is the rate of flow of electric charge, measured in amperes .
The relationship between charge flow, current, and time is presented:
Charge flow, Q = current, I × time taken, t
The page also introduces the concept of potential difference and resistance.
Highlight: In a single closed loop, the current is the same at any point in the circuit.
Potential difference is explained as the energy transferred to a component per unit charge, measured in volts . The relationship between potential difference, energy transferred, and charge is given:
Potential difference, V = energy transferred, E / charge, Q
Resistance is introduced as the opposition to the flow of current in a component, measured in ohms .
Vocabulary:
- Coulomb : The unit of electric charge
- Ampere : The unit of electric current
- Volt : The unit of potential difference
- Ohm : The unit of electrical resistance
This page explores the relationship between current and potential difference, which is crucial for understanding GCSE Physics electricity exam questions and answers.
The page introduces Ohm's law, which states that for an ohmic conductor at constant temperature, the current is directly proportional to the potential difference.
Quote: "Current through a resistor at constant temperature is directly proportional to potential difference across the resistor."
The page explains how to investigate this relationship using a circuit and plot current-potential difference graphs.
Highlight: Ohm's law is a fundamental principle in electrical circuits and is often tested in GCSE Physics electricity exam questions.
The concept of ohmic conductors is introduced, where resistance remains constant as potential difference changes.
Vocabulary:
- Ohmic conductor: A conductor that obeys Ohm's law, maintaining a constant resistance as potential difference varies
This page provides essential information for students preparing for AQA Physics P4 Electric circuits exam style questions and answers.
Page 4: Current-Voltage Relationships
This section explores the relationship between current and potential difference in various circuit components, particularly focusing on resistors and filament lamps.
Definition: An ohmic conductor maintains constant resistance as current changes at constant temperature.
Example: A filament lamp is a non-ohmic conductor because its resistance increases with temperature.
Highlight: Most electrical failures occur due to excessive current through components.
This page introduces the topic of electric circuits, which is a fundamental concept in GCSE Physics electricity. Electric circuits are the backbone of modern electronics and power systems, making them a crucial area of study for students pursuing physics at the GCSE level.
Highlight: Electric circuits form the foundation for understanding how electrical energy is transferred and utilized in various applications.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
GCSE Physics Electricity fundamentals explained in comprehensive detail, focusing on electric circuits, static electricity, and circuit components.
Key points:
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page delves into the basics of electrical charges and static electricity, which are essential concepts in GCSE Physics Static Electricity.
Static electricity occurs when an object becomes charged. The page explains the structure of atoms, including protons, neutrons, and electrons, and their respective charges.
Definition: Static electricity is the accumulation of electrical charges on the surface of an object.
The process of charging by friction is described, where electrons are transferred between insulators when rubbed together. The page also covers the forces between charged objects and the concept of electric fields.
Example: Rubbing a balloon on your hair can cause the balloon to become negatively charged and attract small pieces of paper.
The page concludes with an introduction to circuit diagrams and symbols for various components such as cells, switches, resistors, and meters.
Vocabulary:
- Cell: A device that pushes electrons around a complete circuit
- Ammeter: An instrument used to measure electric current
- Voltmeter: An instrument used to measure potential difference
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page focuses on electric current, a key concept in P4 Physics AQA and GCSE Physics Electricity revision.
Electric current is defined as the flow of charge, typically carried by electrons in metals. The page explains how current transfers energy to components in a circuit.
Definition: Electric current is the rate of flow of electric charge, measured in amperes .
The relationship between charge flow, current, and time is presented:
Charge flow, Q = current, I × time taken, t
The page also introduces the concept of potential difference and resistance.
Highlight: In a single closed loop, the current is the same at any point in the circuit.
Potential difference is explained as the energy transferred to a component per unit charge, measured in volts . The relationship between potential difference, energy transferred, and charge is given:
Potential difference, V = energy transferred, E / charge, Q
Resistance is introduced as the opposition to the flow of current in a component, measured in ohms .
Vocabulary:
- Coulomb : The unit of electric charge
- Ampere : The unit of electric current
- Volt : The unit of potential difference
- Ohm : The unit of electrical resistance
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page explores the relationship between current and potential difference, which is crucial for understanding GCSE Physics electricity exam questions and answers.
The page introduces Ohm's law, which states that for an ohmic conductor at constant temperature, the current is directly proportional to the potential difference.
Quote: "Current through a resistor at constant temperature is directly proportional to potential difference across the resistor."
The page explains how to investigate this relationship using a circuit and plot current-potential difference graphs.
Highlight: Ohm's law is a fundamental principle in electrical circuits and is often tested in GCSE Physics electricity exam questions.
The concept of ohmic conductors is introduced, where resistance remains constant as potential difference changes.
Vocabulary:
- Ohmic conductor: A conductor that obeys Ohm's law, maintaining a constant resistance as potential difference varies
This page provides essential information for students preparing for AQA Physics P4 Electric circuits exam style questions and answers.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Page 4: Current-Voltage Relationships
This section explores the relationship between current and potential difference in various circuit components, particularly focusing on resistors and filament lamps.
Definition: An ohmic conductor maintains constant resistance as current changes at constant temperature.
Example: A filament lamp is a non-ohmic conductor because its resistance increases with temperature.
Highlight: Most electrical failures occur due to excessive current through components.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page introduces the topic of electric circuits, which is a fundamental concept in GCSE Physics electricity. Electric circuits are the backbone of modern electronics and power systems, making them a crucial area of study for students pursuing physics at the GCSE level.
Highlight: Electric circuits form the foundation for understanding how electrical energy is transferred and utilized in various applications.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
