Question Detail

PHY 102 Test Compilation PHY 102 11 Objective Question
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Question

An alternating voltage whose peak value is 80 volts is connected across a 60 ohms resistor. What is the value of the RMS current?
Options
A 1.33 A
B 0.94 A
Correct Answer
C 1.88 A
D 0.67 A
Correct Answer

Option B is the correct answer.

Detailed Explanation

First, calculate the RMS voltage (V_rms) from the peak voltage (V_peak): V_rms = V_peak / √2 = 80 V / √2 ≈ 56.57 V.Then, use Ohm's Law (I_rms = V_rms / R) to find the RMS current: I_rms = 56.57 V / 60 Ω ≈ 0.9428 A.Rounding to two decimal places, the RMS current is 0.94 A.

Hint

Remember the relationship between peak voltage and RMS voltage in AC circuits.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 11
Type: Objective
Difficulty: Not specified
Question 961 of 1819
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