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  4. In the given circuit, with steady current, the potential drop across the capacitor must be

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Q. In the given circuit, with steady current, the potential drop across the capacitor must bePhysics Question Image

Current Electricity

Solution:

Moving anticlockwise from $A$,
image
$-i R-V+2 V-2 i R=0$
or $3 i R=V$ or $i=\frac{V}{3 R}$
$V_{A}-V_{B}=i R+V-V=i R$
$\Rightarrow $ Potential drop across $C=\frac{V}{3}$