H2P-456
Magnetic flux calculations
H2 Physics · JC 2 · Medium · Magnetic flux calculations
A circular loop of wire of radius 3.0 cm lies in a uniform magnetic field of flux density 0.25 T. The field is perpendicular to the plane of the loop and is reduced uniformly to zero in 0.10 s. What is the magnitude of the average induced e.m.f. in the loop?
Use Faraday’s law for a single-turn loop.
Use Faraday’s law for a single-turn loop.
- 7.1×10⁻³ V
- 2.8×10⁻³ V
- 7.1×10⁻⁴ V
- 2.8×10⁻² V
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