Q. A $220 ,V$ ac supply is connected between points $A$ and $B$ as shown in figure. What will be the potential difference $V$ across the capacitor?

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A $220 ,V$ ac supply is connected between points $A$ and $B$ as shown in figure. What will be the potential difference $V$ across the capacitor?

Solution:

Potential difference across capacitor,

$V =$ peak voltage

$ = V_{text{rms}} sqrt {2} $

$ = 220 sqrt {2} V$.