Question

An $AC$ voltage source has an output of $\Delta V=\left(200\,V\right) \sin\,2\pi ft$. This source is connected to a $100\,\Omega$ resistor. $RMS$ current in the resistance is

• A. 1.41 A
• B. 2.41 A
• C. 3.41 A
• D. 0.71 A

Answer 1

Answer: (A)

RMS current in the resistance
$I_{0} =\frac{V_{0}}{R}=\frac{200}{100}=2\, A$
$I_{ rms } =\frac{I_{0}}{\sqrt{2}}=1.414\, A$