Question Detail

PHY 102 Last Minute Prep Objective Question

Question

An a.c circuit has a peak voltage of 100V, across a 50Ω resistor. What are the respective peak and r.m.s currents in the resistor?
Options
A 1.414 A, 2A
B 2A, 2.838A
C 2.838A, 2A
D 2A, 1.414A
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

I_peak = V_peak/R = 100/50 = 2A; I_rms = I_peak/√2 = 2/1.414 = 1.414A

Hint

Apply Ohm's law for peak values and then convert to RMS.

Question Info