Assertion :In the circuit shown in figure, time constant of charging of battery is CR2. Reason: In the absence of capacitor in the circuit, two resistors are in parallel with the battery.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution
The correct option is D Assertion is incorrect but Reason is correct Here the capacitor will be charging only resistor R on the left. So the time constant is τ=CR. If the capacitor is removed, the both resistors will be in parallel.