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If the magnetising field on a ferromagnetic material is increased, its permeability
Options
(a) decrease
(b) increase
(c) is unaffected
(d) may be increase or decrease
Correct Answer:
decrease
Explanation:
Magnetic permeability of substance, μ = B / H ⇒ μ ∝ 1/H
where, H is the magnetising or magnetic field strength.
So, the magnetising field of a ferromagnetic material is increasing thus its, permeability decreased.
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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 charged particle (charge q) is moving in a circle of radius R with uniform speed v
- A body cools in 7 minute from 60⁰C to 40⁰C. What time, in minute does it take to cool
- A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity
- A ballet dancer, dancing on smooth floor, is spinning about a vertical axis
- A radioactive sample S₁ having an activity of 5 μCi has twice the number of nuclei
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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