Electrostatics Question 36

Question: In a parallel plate condenser, the radius of each circular plate is 12cm and the distance between the plates is5mm . There is a glass slab of 3mm thick and of radius 12cm with dielectric constant 6 between its plates. The capacity of the condenser will be

Options:

A) 144×10−9F

B) 40pF

C) 160pF

D) 1.44μF

Show Answer

Answer:

Correct Answer: C

Solution:

C=ε0Ad−t+tK=14π×9×109.π(0.12)2(2+12)10−3

=2×144×10−1036×5=160pF

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