Question

In the given AC circuit, the rms current drawn from the source is.

• A. 20 A
• B. 10 A
• C. 5 A
• D. $5\sqrt{2}A$

Answer 1

The correct option is C 5 A


The phasor diagram at t = 0 is
Where $i_R=\frac{100}{20}=5A$
$i_c=\frac{100}{20}=5A$
$i_L=\frac{100}{10}=10A$
$i_0=\sqrt{5^2+5^2}$
$=5\sqrt{2}A$
$I_{rms}=5A$