Question

1 volt x 1 coulomb = ___________.

Answer 1

1. E.m.f is the work done per unit charge
2. The $W=qV$, where W is the work done, q is the charge transferred and V is the e.m.f.
3. The unit of E.m.f is volt.
4. The charge is having coulomb as its unit.
5. The unit of work done is joule.
6. Thus, the product of 1 volt and 1 coulomb will give 1 joule as per the expression above.

Hence, 1 volt x 1 coulomb equals One joule.