H2P-440

Faraday’s law

H2 Physics · JC 2 · Medium · Faraday’s law

A wheel of radius

0.25\,\text{m}

rotates at

15\,\text{revolutions per second}

in a uniform magnetic field of flux density

0.20\,\text{T}

perpendicular to the plane of the wheel. Using Faraday’s law, calculate the magnitude of the e.m.f. induced between the centre and the rim of the wheel.

0.59 V
0.26 V
1.6 V
3.9 V

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