Electrostatics Question 803

Question: The capacitor, whose capacitance is 6, 6 and$ 3\mu F $ respectively are connected in series with 20 volt line. Find the charge on $ 3\mu F $ .

Options:

A) $ 30\mu C $

B) $ 60\mu F $

C) $ 15\mu F $

D) $ 90\mu F $

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Answer:

Correct Answer: A

Solution:

[a] in series $ \frac{1}{C}=\frac{1}{C _{1}}+\frac{1}{C _{2}}+\frac{1}{C _{3}} $ and charge on each capacitor is same.



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