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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/m 2 . The value of the induced emf in wire is :

1. 0.3 × 10 –3 V
2. 2.5 × 10 –3 V
3. 1.5 × 10 –3 V
4. 1.1 × 10 –3 V

Correct answer: 1.1 × 10 –3 V

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