question_answer

Figures below show regular hexagons, with charges at the vertices. In which of the following cases the electric field at the centre is not zero                                                   [AMU 2000]           

A)            1    

B)            2

C)            3    

D)            4

Correct Answer: B

Solution :

             Electric field at a point due to positive charge acts away from the charge and due to negative charge it act?s towards the charge.