The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces__________?
Correct answer: B. the same heat as produced by A.C. when flowing through the same circuit
- A. the more heat than produced by A.C. when flowing through the same circuit
- B. the same heat as produced by A.C. when flowing through the same circuit
- C. the less heat than produced by A.C. flowing through the same circuit
- D. none of the above
Explanation
RMS current is the equivalent DC current that produces the same heating effect in the same resistance over the same time. This is why it is also called the effective value of AC.
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