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प्रश्न
A metal rod of length 2 m is rotated with a frequency 60 rev/s about an axis passing through its centre and perpendicular to its length. A uniform magnetic field of 2T perpendicular to its plane of rotation is switched-on in the region. Calculate the e.m.f. induced between the centre and the end of the rod.
संख्यात्मक
उत्तर
Given, I = 2m
ω = 60 rev/s
B = 2T
We know,`epsilon = 1/2 Bl^2omega`
`epsilon = 1/2 (2)(2)^2(60)`
ε = 4 × 60
ε = 240
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