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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.
Related Questions: - Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively
- The r.m.s speed of the molecules of a gas in a vessel is 400 m/s
- A coil of 100 turns carries a current of 5 mA and creates a magnetic flux of 10⁻⁵ Wb.
- When a ball is thrown up vertically with velocity vₒ,it reaches a maximum height
- The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively
- The r.m.s speed of the molecules of a gas in a vessel is 400 m/s
- A coil of 100 turns carries a current of 5 mA and creates a magnetic flux of 10⁻⁵ Wb.
- When a ball is thrown up vertically with velocity vₒ,it reaches a maximum height
- The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
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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