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Q. The equivalent resistance between points $A$ and $B$ in figure at steady state will bePhysics Question Image

Current Electricity

Solution:

In the steady state, no current is flowing through the capacitor branch, so the capacitor branches may be removed from the circuit, the equivalent circuit is shown in figure.
image
$\therefore R_{A B}=R_{1}+R_{2}=r+r=2 r$