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Electric Field Due to a Dipole Along the Equatorial Line

A vertical ro...

Question

A vertical rod of length l is moved with constant velocity v towards east. The vertical component of Earth magnetic field is B and angle of dip is theta. The induced e.m.f in the rod is?

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Solution

Solution:
Bv/Bh= tan theta

or, Bh = Bv/tan theta

or, Bh=Bv. Cot theta

Induced e.m.f must be due to horizontal component because rod is vertical.

E= Bh. l.v = Bv.cot theta. l.v

(Answer)

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