Fundamentholfundamenthol
JEE Main2019Physics
Q.

A 10 m long horizontal wire extends from North East to South West. It is falling with a speed of 5.0 ms–1, at right angles to the horizontal component of the earth’s magnetic field, of 0.3×10–4 Wb/m2. The value of the induced emf in wire is:

  1. A

    1.1 × 10–3 V

  2. B

    0.3 × 10–3 V

  3. C

    2.5 × 10–3 V

  4. D

    1.5 × 10–3 V

Solution

Induced emf = Bv

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