Question

$120AC$ voltage is applied to $10$ ohm resistance. The peak voltage across the resistor is

• A. $120V$
• B. $120\sqrt{2}V$
• C. $\frac{120}{\sqrt{2}}V$
• D. none of these

Answer 1

Answer: (B)

Here, $V_{rms}=120AC$
Peak voltage $V_0=V_{rms}\sqrt{2}$
$=120\sqrt{2}V$