Physics Alternating Current PMDC Conceptual Practice
PMDC Verified Question 3 of 127
The maximum instantaneous value of alternating voltage or current measured from its zero reference value is known as:
A
Period
B
Cycle
C
Peak value
D
Peak-to-peak value
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Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Peak value
Concept:

This is a definition-based question concerning the geometric parameters of an AC waveform.

Solution:

The peak value (amplitude, \( V_0 \) or \( I_0 \)) is defined as the maximum value attained by an alternating quantity during one complete cycle, measured directly from the zero reference line.

Why other options are incorrect:

  • Peak-to-peak value is the total measurement from the positive maximum to the negative maximum peak, equal to \( 2V_0 \).


  • Cycle is one complete set of positive and negative values.


  • Period is the duration of time required to complete one cycle.

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