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Three identical metallic plates are kept parallel to one another at separations a and b. The outer plates are connected to the ground and the middle plate is given charge Q (figure). Then, the charge on the right side of middle plate is

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By Expert Faculty of Sri Chaitanya
a
Q/2
b
−Qba+b
c
Qba+b
d
Qaa+b

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detailed solution

Correct option is D

V=Q1C1=Q2C2Q1+Q2=Qwhere C1=ε0A/a    and  C2=ε0A/bSolve to findQ2=Qaa+b

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