Question

Problem 1.8 : Four charges +10 nC, - 20 nC, +10 nC and -20 nC respectively are placed at the corners
A, B, C and D of a square ABCD of side 1 m. Calculate the resultant electric field at the centre of the square.​

Answer 1

Answer:

0

Explanation:

because it is a symmetric situation

In this case the electric at centre by -20 gets cancelled by another -20nC charge and same with 10nC