The two ends of a horizontal conducting rod of length l are joined to

1.	The two ends of a horizontal conducting rod of length l are joined to a voltmeter. The whole arrangement moves with a horizontal velocity v, the direction of motion being perpendicular to the rod. The vertical component of the earth’s magnetic field is B. The voltmeter reading is(a) Blv only if the rod moves eastward (b) Blv only if the rod moves westward (c) Blv if the rod moves in any direction (d) zero
Answer» Correct Answer is: (d) zero The voltmeter joined to the two ends of a rod forms a closed loop.

The two ends of a horizontal conducting rod of length l are joined to a voltmeter. The whole arrangement moves with a horizontal velocity v, the direction of motion being perpendicular to the rod. The vertical component of the earth’s magnetic field is B. The voltmeter reading is(a) Blv only if the rod moves eastward (b) Blv only if the rod moves westward (c) Blv if the rod moves in any direction (d) zero

Answer»

Correct Answer is: (d) zero

The voltmeter joined to the two ends of a rod forms a closed loop.

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