Q.

Two plates, each of area A, are placed parallel to each other at a distance d. One plate is connected to a battery of emf E and its negative is earthed. The other plate is also earthed. The charge drawn by plate is

Moderate

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a

2ε0AEd

b

ε0AEd

c

ε0AE2d

d

3ε0AEd

answer is 2.

(Detailed Solution Below)

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Detailed Solution

The circuit can be redrawn as shown in figure. Charge on capacitor isQ=CE=ε0AEdOptions 1 and 3 and 4 are incorrect.
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