Q.

A large parallel plate capacitor, whose plates have an area of 1 m2 are separated from each other by 1 mm, is being charged at a rate of 25.8 V/s. If the dielectric between the plates has the dielectric constant 10, then the displacement current at this instant is

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a

1.1 μA

b

11 μA

c

2.2 μA

d

25 μA

answer is C.

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Detailed Solution

C=ε0KAd=8.85×1012×10×1103

=8.85×108 F

i=ddt(CV)=CdVdt=8.85×108×25

=2.2×106A

=2.2 μA

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