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An iron rod of volume 10⁻⁴ m³ and relative permeability 1000 is placed inside a long solenoid having 5 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod is
Options
(a) 20 Am²
(b) 25 Am²
(c) 30 Am²
(d) 35 Am²
Correct Answer:
25 Am²
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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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
- A small rod of bismuth is suspended freely between the poles of a strong electromagnet.
- The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is
- If r denotes the distance between sun and the earth, then the angular momentum of the earth
- The photoelectric threshold frequency of a metal is ν. When light of frequency 4ν
- An alternating voltage of 220 V, 50 Hz frequency is applied across a capacitor
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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