Three charges, each +q, are placed at the corners of an isosceles triangle ABC of sides BC and AC, 2a. D and E are the mid points of BC and CA. The work done in taking a charge Q from D to E is
3qQ
8πε0a
qQ
4πε0a
zero
3qQ
4πε0a
Correct Option: C
AC = BC VD = VE We have, W = Q (VE – VD) ⇒ W = 0
