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Q.

In circuit diagram capacitance of capacitor C1=3μF and C2=1μF. It is given that time constant of circuit between A and B is 3 millisecond. Value of R will be

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a

1Ω

b

10Ω

c

100Ω

d

1000Ω

answer is D.

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Detailed Solution

Equivalent circuit can be drawn as below

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RC=3×10−1secR×3×10−6=3×10−3R=1000Ω

∴  Correct answer is (4)

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