Question Detail

PHY 102 Test Compilation PHY 102 14 Objective Question

Question

Which of the following is the correct relationship between the PEAK value and the R.M.S. value of an alternating signal?
Options
A peak = r.m.s. x √2
Correct Answer
B r.m.s. = peak x √2
C peak = r.m.s./√2
D peak = √2/r.m.s.
Correct Answer

Option A is the correct answer.

Detailed Explanation

For a sinusoidal alternating current or voltage, the Root Mean Square (RMS) value is related to the peak value (V_peak or I_peak) by the equation: RMS = Peak / √2. Rearranging this, Peak = RMS × √2.

Hint

The RMS value is a measure of the effective value of an AC signal, and it is always less than the peak value for a sine wave.

Question Info