Question

Write two differences between emf and potential difference.

Answer 1

Difference between Emf and Potential difference.

Electromotive force (EMF)	Potential difference
Emf is Electromotive force. In an open circuit, it is the difference of potential between two electrodes of a cell or battery.	The potential difference between any two points in a closed circuit.
Formula: $\mathrm{E}=\mathrm{I}\times (\mathrm{R}+\mathrm{r})$	Formula: $\mathrm{V}=\mathrm{I}\times \mathrm{R}$