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Question

A parallel plate air capacitor has a capacitance C. When it is half filled with a dielectric of dielectric constant 5, the percentage increase in the capacitance will be:
  1. 400%
  2. 66.6%
  3. 33.3%
  4. 200%

A
200%
B
400%
C
33.3%
D
66.6%
Solution
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C=Aϵ0dC1=KC=5C=Aϵ0Kd%increase=(5CCC)×100=400%
1380525_945247_ans_a15e431ffbc943fe84d3ef7d174191d8.png

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