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Core of electromagnets are made of ferromagnetic material which has
Options
(a) low permeability and high retentivity
(b) high permeability and low retentivity
(c) low permeability and low retentivity
(d) high premeability and high retentivity
Correct Answer:
high permeability and low retentivity
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
- In a n-p-n transistor about 10¹⁰ electrons enter the emitter in 2 μs,
- If force(F), Velocity(V) and time(T) are taken as fundamental units, then the dimensions
- The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
- The polarising angle of glass is 57⁰. A ray of light which is incident at this angle
- A round disc of moment of inertia i₂ about its axis perpendicular to its plane
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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