A rectangular loop (10 cm × 20 cm) with 50 turns rotates at 60 Hz in a uniform magnetic field of 0.5 T. What is the maximum induced emf?
Correct answer: B. 188.5V
- A. 37.7V
- B. 188.5V
- C. 113.1V
- D. 150.8V
Explanation
N=50, B=0.5T, A=0.02 m², ω≈377 rad/s → emf = 50×0.5×0.02×377 ≈ 188.5 V.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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