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Potential Difference

The potential difference is the energy transferred per unit charge by the charge carriers to the component.(the amount of energy transferred to the component by each coulomb of charge).
V=W
 Q
volts=joules per coulomb
The potential difference is the work done per unit charge.
volts = JC-1
When the electron does work, the electron loses energy because it transfers its energy to the component.

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Specification: AQA Physics (7407), AS-level, 3.5.1.1 Basics of electricity. Topic: Electric Current.

Key terms in this lesson

Potential difference
The energy transferred per unit charge as charge moves between two points in a circuit.
Resistance
The ratio of the potential difference across a component to the current flowing through it, measured in ohms.

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