Electromagnetic Induction and Alternating Current 1 Question 2
2. A long horizontal wire extends from North-East to South-West. It is falling with a speed of at right angles to the horizontal component of the earth’s magnetic field of . The value of the induced emf in wire is
(a)
(b)
(c)
(d)
(Main 2019, 12 Jan II)
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Answer:
Correct Answer: 2. (a)
Solution:
- Wire falls perpendicularly to horizontal component of earth’s magnetic field, so induced electromotive force
Substituting the given values, we get