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physics paper 2- circuits
15/07/2022
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COMPONENTS CELL F BATTERY SWITCH VOLTMETER qv Closect open DIODE AMMETERS A RESISTOR (fixed) VARIABLE RESISTOR Circuits FILAMENT BULB MOTOR THERMISTOR LOR (light dependent resistors LED (ight emitting dicae) V=IR potential difference (V) + e = current resistance (A) licing on wanted greate energy transfer, increasing efficiency SERIES CIRCUIT • Closed sircuit • current same everywhere 0.SA 0.5A energy transferred POTENTIAL DIFFERENCE measured in VOITS energy transferred pur unit charge Joule per coulomb ↓ •measured across two points •measured with a voltmeter ↳ placed in paralel • Voltage across a component in a closed or open circuit E=QV (current will always flow) 0.5A charge moved (C) K PARALLEL CIRCUIT • branched circuit •current spirts into multiple paths v • total current into a junction = total current in each of the branches • voltage is the same across each branch potential differenc (V) 03A O.IA O.IA OIA 5V 5v 0-3A CURRENT measured in amps rare of flow of charge (flow ot electrons in the wires •measured at single point measured with animeter placed in series
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