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Question

Five identical equispaced conducting plates are given charges as shown in the figure. List -1 gives the labes of the sides of the plates and List -2 gives the charges

List- 1List - 2I)aP)QII)dQ)2QIII)fR)3QIV)hS)5Q/3T)-2QU)-4Q/3

When switch S1 is open and S2 is closed, match List-1 with List -2

A
I P II S III U IV R
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B
I P II T III R IV Q
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C
I P II Q III T IV Q
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D
I P II S III R IV T
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Solution

The correct option is A I P II S III U IV R


By balancing charge on A and D,
Q+qq+q+2Q+q=5Q -- (1)
By equating potentials on A and D,
QqC+3QqC+qC=0 -- (2)
Solving the equations, we get
q=Q and q=4Q3
Charge on a =q=Q
Charge on d =3Qq=5Q3
Charge on f =q=4Q3
Charge on h =2Q+q=3Q


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