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 Easth's magnetic field , of 0.3 X 10-4 Wb/m2 . The value of the induced emf in wire is :
1.1 X 10-3 V
0.3 X 10-3 V
2.5 X 10-3 V
1.5 X 10-3 V
Motional EMF -
- wherein
magnetic field
length
velocity of u perpendicular to uniform magnetic field.
1.1 X 10-3 V
Option 2)0.3 X 10-3 V
Option 3)2.5 X 10-3 V
Option 4)1.5 X 10-3 V
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