The RMS value of an AC current is:
Correct answer: C. That steady current that produces the same rate of heating in a resistor as the actual current
- A. Its peak value
- B. Its average value
- C. That steady current that produces the same rate of heating in a resistor as the actual current
- D. That steady current that charges a battery at the same rate as the actual current
Explanation
The RMS (Root Mean Square) value of an AC current is a way to represent its effective or equivalent DC value. It is defined as the steady current that would produce the same rate of heating in a resistor as the actual AC current.Explanations for Wrong Choices:- (a) Its peak value: Incorrect. The RMS value is not equal to the peak value of the AC current.- (b) Its average value: Incorrect. The RMS value is not equal to the average value of the AC current.- (d) That steady current that charges a battery at the same rate as the actual current: Incorrect. The RMS value is related to heating in a resistor, not charging a battery.So, the correct answer is (c) That steady current produces the same rate of heating in a resistor as the actual current.
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