H2P-444
Faraday’s law
H2 Physics · JC 2 · Medium · Faraday’s law
A coil of 50 turns and cross-sectional area 2.0 cm² is placed in a region where the magnetic flux density is increased uniformly from 0.10 T to 0.30 T in 0.40 s. The field is perpendicular to the plane of the coil. What is the magnitude of the induced e.m.f. in the coil?
- 5.0 × 10⁻³ V
- 2.0 × 10⁻³ V
- 1.0 × 10⁻² V
- 4.0 × 10⁻² V
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