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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
- If Q, E and W denote respectively the heat added, change in internal energy
- A boat is sent across a river with a velocity of 8 km/h.If the resultant velocity
- The magnetic moment of a diamagnetic atom is
- An inductor 20 mH, a capacitor 50 μF and a resistor 40Ω are connected in series
- A radioactive substance emits n beta particles in the first 2 s and 0.5 n beta
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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