SSE JE Electrical Engineering 28 Oct 2020 Shift 1 Papers

As we know that, SI unit of work done is joule and the SI unit of charge is the coulomb, then
$1\mathrm{V}=\frac{\mathrm{J}}{\mathrm{C}}$
Joule/coulomb is the same as 1 V.
Therefore, 10 joules / coulombs = 10 volts