Question Detail
Question
An alternating voltage whose peak value is 80 volts is connected across a 60 ohms. What is the value of rmsrms current?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Given peak voltage (Vpeak) = 80 V and Resistance (R) = 60 Ω.1. Calculate the RMS voltage (Vrms): For a sinusoidal AC voltage, Vrms = Vpeak / √2.Vrms = 80 V / √2 ≈ 80 V / 1.414 ≈ 56.568 V.2. Calculate the RMS current (Irms) using Ohm's Law: Irms = Vrms / R.Irms = 56.568 V / 60 Ω ≈ 0.9428 A.Rounding to two decimal places, Irms ≈ 0.94 A.
Hint
First, convert the peak voltage to RMS voltage, then use Ohm's law to find the RMS current.