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A horizontal wire 0.8 m long is falling ...

A horizontal wire `0.8 m` long is falling at a speed of `5 m//s` perpendicular to a uniform magnetic field of `1.1 T`, which is directed from east to west. Calculate the magnitude of the induced ernf. Is the north or south end of the wire positive?

Text Solution

Verified by Experts

`:'e=Bvl=1.1xx5xx0.8`
`4.4V`
Apply right hand rule for polarity of this emf.
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Knowledge Check

  • A wire of length 2 m moves with a speed of 5 m//s perdendicular to a magnetic field of induction 0.1 W//b m^(2) . The e.m.f. induced in the wire is

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