JAMB Physics 2012 Objective — Question 44
Question 44 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2012 Objective paper, with the correct answer and a full explanation.
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A conductor of length 1m moves with a velocity of 50ms⁻¹ at an angle of 30° to the direction of a uniform magnetic field of flux density 1.5Wbm⁻². What is the e.m.f. induced in the conductor?
- A. 37.5VCorrect
- B. 50.5V
- C. 56.5V
- D. 80.5V
Explanation
e.m.f. = BLvsinθ = 1.5×1×50×sin30° = 1.5×1×50×0.5 = 37.5V.
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