Question

Solve this:
Q. A 110 V, 60 W lamp is run from a 220 V AC mains using a capacitor in series with the lamp, instead of a resistor then the voltage across the capacitor is about:-

Answer 1

Dear student,

$$\begin{gathered} V_c=\sqrt{V^2-{V^2}_R} \\ {V}_c=\sqrt{(220{)}^2}-(110{)}^2 \\ {V}_c=190V \end{gathered}$$

Regards