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A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move
Options
(a) in a circular orbit
(b) along a parabolic path
(c) along a straight line
(d) in an elliptical orbit.
Correct Answer:
in a circular orbit
Explanation:
If the electric field switched off, and the same magnetic field is maintained, the electrons move in a ciruclar orbit and electron will travel a magnetic field to its velocity.
Related Questions: - The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- A compass needle which is allowed to move in a horizontal plane
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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
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- A compass needle which is allowed to move in a horizontal plane
- In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
- Water rises in a vertical capillary tube up to a height of 2.0 cm.
- A circular disc of radius R and thickness R/6 has moment of inertia I about an axis
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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