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The battery in an electrical circuit can be thought of as pushing electrical charge around the circuit to make a current.
Electromotive force (e.m.f.) is measured in amperes (A).
1 kilovolt (kV) is equal to 1000 volts (V).
A solar cell is an example of a source of electromotive force.
Electromotive force is defined as the electrical work done by a source in moving a unit charge around a complete circuit.
The equation for electromotive force (e.m.f.) is E=QW.
1 volt is equal to 1 joule per coulomb.
Potential difference (p.d.) is an indication of how much energy is transferred by the charges.
Potential difference is measured in joules (J).
The equation for potential difference is V=QW.