JAMB Physics 2007 Objective — Question 20
Question 20 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2007 Objective paper, with the correct answer and a full explanation.
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The instantaneous value of the induced e.m.f. as a function of time is e = e0 sin(wt) where e0 is the peak value of the e.m.f. The instantaneous value of the e.m.f. one quarter of the period is
- A. e0Correct
- B. e0/2
- C. e0/3
- D. 0
Explanation
One quarter of a cycle corresponds to theta = 90 degrees. e = e0 sin(90) = e0 x 1 = e0.
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