An ac source generating a voltage V = Vm sin
wt is connected to a capacitor of capacitance C.
Find the expression for the current i, owing
through it. Plot a graph of v and i versus wt
to show that the current is p/2 ahead of the
voltage.
A resistor of 200 W and a capacitor of 15.0 mF
are connected in series to a 220 V, 50 Hz ac
source. Calculate the current in the circuit
and the rms voltage across the resistor and the
capacitor. Is the algebraic sum of these voltages
more than the source voltage ? If yes, resolve the
paradox.
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