Electrostatics Question 136

Question: A parallel plate capacitor of capacity C0 is charged to a potential V0 (i) The energy stored in the capacitor when the battery is disconnected and the separation is doubled E1 (ii) The energy stored in the capacitor when the charging battery is kept connected and the separation between the capacitor plates is doubled is E2. Then E1/E2 value is [EAMCET 2003]

Options:

A) 4

B) 3/2

C) 2

D) 1/2

Show Answer

Answer:

Correct Answer: A

Solution:

Let E=12C0V02thenE1=2E

and E2=E2

So E1E2=41



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