Question

14. Four charges 100, -50 ,20 and +60(all
charges are in micro coulomb) are placed
at 4 corners of a square of side v2m .find
the electric potential at the centre of the
square?
(3 Points)​

Answer 1

Answer:

E = - dv/dr

i.e. E is equal to negative of potential gradient.

Here negative sign indicates direction .

Explanation: