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Q.

The area of each plate of a parallel plate capacitor is 100 cm2 and the distance between the plates is 1 mm. It is filled with mica of dielectric 6. The radius of the equivalent capacity of the sphere will be:

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a

4.77 m

b

47.7 m

c

477 m

d

None of the above

answer is B.

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Detailed Solution

C=ε0AKd=4πε0r

r = Radius of sphere of equivalent capacity

⇒r=AK4πd=100×10−4×61×10−3×4×3.14=153.14=4.77m

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