Questions  

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
b
10Ω
c
100Ω
d
1000Ω
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detailed solution

Correct option is D

Equivalent circuit can be drawn as belowRC=3×10−1secR×3×10−6=3×10−3R=1000Ω∴  Correct answer is (4)

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Two capacitors C1 and C2 having capacitance 2μF and 4μF respectively are connected as shown in the figure. Initially C1 has charge 4μC and C2 is uncharged. After long time closing the switch S :

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