Question

In the given circuit, rms value of current $\left(I_{rms}\right)$ through the resistor $R$ is:

• A. $\frac{1}{2}A$
• B. $20A$
• C. $2A$
• D. $2\sqrt{2}A$

Answer 1

Answer: (C)

$z=\sqrt{100^2+(200-100{)}^2}$
$=100\sqrt{2}\Omega$
$i_{rms}=\frac{V_{rms}}{z}=\frac{200\sqrt{2}}{100\sqrt{2}}$
$=2A$