Question

An alternating voltage E = 200 $\sqrt{2}$ sin (100t) V. A capacitor of 1 µ F is connected through an a.c. ammeter, what will be the reading of the ammeter

• A. 20 mA
• B. 40 mA
• C. 30 mA
• D. 10$\sqrt{2}$mA

Answer 1

The correct option is A 20 mA

$I_{rms}=\frac{V_{rms}}{z}=\frac{v_0}{\sqrt{\frac{1}{WC}}}$
$=20\times {10}^{-3}$
= 20 mA