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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
- Spectrum of X-rays is
- The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
- When an object is placed 40cm from a diverging lens, its virtual image is formed 20 cm
- Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å.
- An LCR circuit contains resistance of 100 ohm and a supply of 200 volt at 300 radian
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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