A horizontal straight wire 20m long extending from east to west fallin – McqOptions

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1.	A horizontal straight wire 20m long extending from east to west falling with a speed of 5.0 m/s, at right angles to the horizontal component of the earth's magnetic field \[0.30\times {{10}^{-4}}\,Wb/{{m}^{2}}\]. The instantaneous value of the e.m.f. induced in the wire will be
A.	3 mV
B.	4.5 mV
C.	1.5mV
D.	6.0 mV
Answer» B. 4.5 mV

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