If 100 J of work is done to move electric charge equal to 4 C from a place where potential difference is -10 V to another place where potential is V volt, then the value of V would be:

15 V

The correct answer is Option (3) → 15 V

To find the potential V at the final spot.

$W=q(v_f-v_i)$

$⇒v_f=\frac{W}{q}+v_i$

$⇒v_f=\frac{100}{4}+(-10)$

$=15V$