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JEE PHYSICS MCQ: CURRENT ELECTRICITY

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A parallel-plate capacitor with plate area 20 cm220 \mathrm{~cm}^2 and plate separation 1.0 mm1.0 \mathrm{~mm} is connected to a battery. The resistance of the circuit is 10kΩ10 \mathrm{k} \Omega. Find the time constant of the circuit.
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Correct option: D
0.18 μs0.18\,\mu \mathrm{s}
Option D (0.18 μs0.18\,\mu \mathrm{s}) is correct because it's the time constant calculated using the formula τ=RC\tau = RC where C is the capacitance of the parallel plate capacitor.

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