Question

what is the difference between emf and potential difference
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Answer 1

Answer:

The electromotive force transfers the energy in the whole of the circuit. The potential difference is the measure of energy between any two points on the circuit. ... The emf force gains the electrical energy in the circuit whereas the potential difference loss the electrical energy in the circuit.

Answer 2

Answer:

Electromotive force (EMF) is equal to the terminal potential difference when no current flows. EMF and terminal potential difference (V) are both measured in volts, however they are not the same thing. EMF (ϵ) is the amount of energy (E) provided by the battery to each coulomb of charge (Q) passing through.