What is the frequency of an alternating current, if it reaches 90° within 4.167 ms?
A. 20 Hz
B. 30 Hz
C. 50 HZ
D. 60 Hz
Show Answer
Answer: D
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What is the frequency of an alternating current, if it reaches 90° within 4.167 ms?
A. 20 Hz
B. 30 Hz
C. 50 HZ
D. 60 Hz
Answer: D
Share your understanding of this question with the correct explanation.