PH-1595
Electromagnetic induction
Physics · Secondary 4 · Medium · Electromagnetic induction
An a.c. generator produces a sinusoidal e.m.f. that is displayed on an oscilloscope. The time between two successive peaks on the screen is 5.0 ms. What is the frequency of the e.m.f.?
- 200 Hz
- 50 Hz
- 500 Hz
- 20 Hz
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