A horizontal straight wire 20 m long extending from east to west falling with a speed of 5.0 m\s, at right angle with the horizontal component of the earth’s magnetic field 0.30 ×10 -4 Wb \ m 2 . The instantaneous Value of the e.m. f. induced in the wire will be:
Text Solution
Verified by ExpertsThe correct answer is:
A
ε ind = Bv λ
= 0.3 × 10 –4 × 5 × 20
= 3 × 10 –3 v
= 3 mv.
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