Question

Four charges 15,-15,20,-50micro coulombs are placed at the corners of a square of side0.2m. Calculate the electric field at the centre of the square.​

Answer 1

Explanation:

formula with help you solve this problem

E=kq/r² for every charge find valu of E and you get E1 .E2.E3.E4 values

where k is a constant with a value of 8.99 x 109 N m2/C2.

r=a/√2

so at the end E=√E1+E2+E3+E4