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A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole It:
Options
(a) will become rigid showing no movement
(b) will stay in any position
(c) will stay in north-south direction only
(d) will stay in east-west direction only
Correct Answer:
will stay in any position
Explanation:
Since magnetic field is in vertical direction and needle is free to rotate in horizontal plane only so magnetic force cannot rotate the needle in horizontal plane so needle can stay in any position.
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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a coil having e.m.f. of 8 V induced for 0.05 s. The value of current changes
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
- A ball rolls without slipping. The raidus of gyration of the ball about an axis
- How much work is required to carry a 6 μC charge from the negative terminal
- α-particles, deuterons and protons of same energy are moving in a perpendicular
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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