The peak value of an alternating current whose rms value is 10 A is about
- A. 7.07 A
- B. 14.14 A
- C. 10 A
- D. 20 A
Explanation
The peak is the rms multiplied by the square root of 2, so 10 times 1.414 gives 14.14 A. Dividing instead gives 7.07 A, which would be the rms if 10 A were the peak. Keeping track of which value a question quotes is the whole difficulty in these problems.
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