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AS Physics Key Definition: Energy, Power & Resistance
Definition for Charge: Charge is the quantity of electric charge which passes a point in
the circuit when a current of 1A flows for 1 second.
Definition for Current: Current is the rate of flow of charge in a circuit.
Definition for Ohm: One ohm is equivalent to the electrical resistance of a conductor
when 1A of current flows with a potential difference of 1 volt.
Definition for the Volt: One volt is equivalent to energy transfer per for one joule per
Ohmic Conductor: Filament Lamp:
Semi-Conductor Diode: Thermistor:
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