The magnitude of the earth’s magnetic field at the North Pole is B0.

1.	The magnitude of the earth’s magnetic field at the North Pole is B0. A horizontal conductor of length l moves with a velocity v. The direction of v is perpendicular to the conductor. The induced emf is (a) zero, if v is vertical (b) B0lv, if v is vertical (c) zero, if v is horizontal (d) B0lv, if v is horizontal
Answer» Correct Answer is: (a) zero, if v is vertical, (d) B₀lv, if v is horizontal At the poles, the earth’s magnetic field is vertical.

The magnitude of the earth’s magnetic field at the North Pole is B0. A horizontal conductor of length l moves with a velocity v. The direction of v is perpendicular to the conductor. The induced emf is (a) zero, if v is vertical (b) B0lv, if v is vertical (c) zero, if v is horizontal (d) B0lv, if v is horizontal

Answer»

Correct Answer is: (a) zero, if v is vertical, (d) B₀lv, if v is horizontal

At the poles, the earth’s magnetic field is vertical.

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