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Question

In the circuit shown, the internal resistance of the cell is negligible. The steady state current in the 2Ω resistor is :
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A
0.6 A
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B
1.2 A
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C
0.9 A
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D
1.5 A
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Solution

The correct option is C 0.9 A
In the steady state, the capacitor acts as an open to the circuit.
Thus equivalent resistance of the circuit becomes,
2.8Ω+2×32+3Ω=4Ω
Thus current extracted from the battery=6 V4 Ω=1.5 A
Thus current that goes into the 2 Ω resistance=32+3×1.5 A=0.9 A

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