Question

Four metallic plates are placed as shown in the figure. Plate 2 is given a charge Q whereas all other plates are uncharged. Plates 1 and 4 are jointed together. The area of each plate is same.

The charge appearing on the right on the right side of plate 3 is 

(A) Zero 

(B)+Q/4 

(C) -3Q/4 

(D)Q/2

Answer 1

Correct option (B)+Q/4 

Explanation: 

 Let the distribution of charges be 

Since the potential difference between plates (1) and (4) is zero.