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A circuit consists of a source of a cons...

A circuit consists of a source of a constant `emf xi` and a resistance `R` amd a capacitor with capacitance `C` connected in series. The internal resistance of the source is negligible. At a moment `t = 0` the capacitance of the capacitor is abruply decreased `eta`-fold. FInd the current flowing through the circuit as a function of time `t`.

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A, B
charge as a function of time `q= q_(0) (1-e^(-t//tau))`. Electric current as a function of time `i=i_(0) e^(-t//tau)`
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Knowledge Check

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