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Question

Current through the battery at the instance when the switch S is closed is: (see figure)

157653_54d13a2a54144fac9e34c20a88167025.png

A
zero
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B
2 A
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C
4 A
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D
5 A
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Solution

The correct option is D 5 A
When switch S is closed, at t=0 the capacitance at the top will behave as a short circuit. So the whole circuit will be treated as shown in figure below.
Thus, the current through the battery is I=10/2=5A
255850_157653_ans_a742faef483a435db09ddbf1f389f866.png

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