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Question
Magnitude of the induced e.m.f. produced between the ends of a conductor of length `("‘"L"’")/2` moving with a uniform velocity ‘v’ at right angles to a uniform magnetic field of intensity ‘2B’ will be ______.
Options
`(BLv)/4`
`(BLv)/2`
BLv
2BLv
MCQ
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Solution
Magnitude of the induced e.m.f. produced between the ends of a conductor of length `("‘"L"’")/2` moving with a uniform velocity ‘v’ at right angles to a uniform magnetic field of intensity ‘2B’ will be BLv.
Explanation:
For maximum induced e.m.f. (e) = Blv
But e = `L/2` and field intensity (B) = 2B
∴ e = `2B(L/2)v` = BLv
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