H2P-467
Faraday’s law
H2 Physics · JC 2 · Medium · Faraday’s law
A circular loop of wire of radius 3.0 cm lies in a uniform magnetic field of flux density 0.40 T directed perpendicular to the plane of the loop. The field is switched off uniformly in 0.080 s. What is the magnitude of the average induced e.m.f. in the loop?
- 1.4×10⁻² V
- 1.1×10⁻³ V
- 3.8×10⁻² V
- 4.5×10⁻⁴ V
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