In the given circuit diagram, when the current reaches a steady-state in the circuit, the charge on the…

In the given circuit diagram, when the current reaches a steady-state in the circuit, the charge on the capacitor of capacitance C will be:
  1. CEr1r1+r
  2. CE
  3. CEr1r2+r
  4. CEr2r+r2

Solution

In steady state, current through capacitor will be zero, so current through r1 will be zero.

Hence, the net current flowing in the circuit will be,
I=Er+r2
The potential difference across the capacitor will be,
V2=I×r2=Er2r+r2

Therefore, charge on the capacitor plate will be,
q=CV2=CEr2r+r2

Asked in: JEE Main 2017 (02 Apr)

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