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A bar magnet having magnetic moment M, is bent into a semicircle. The new moment of magnet will be

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Important Questions on Magnetism

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 9

A bar magnet of length l and magnetic dipole moment M is bent in the form of an are as shown in the figure. The new magnetic dipole moment will be

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 10
A magnetized wire of magnetic moment M is bent into an arc of a circle that substends an angle of 60° at the centre. The equivalent magnetic moment is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 11
A magnet of magnetic moment M and pole strength m is divided in two equal parts, then magnetic moment of each part will be
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 12
A coil of length L, carries a current i. The magnetic moment of coil is proportional to
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 13
A wire of length l, carrying current i, is bent in circle of radius r, then magnetic moment at centre of loop is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 14
A bar magnet of magnetic moment M→ is placed in a magnetic field of induction B→. The torque exerted on it is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 15
There is no couple acting when two bar magnets are placed coaxially separated by a distance because
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 8 - Magnetism>Competitive Thinking>Q 16
A bar magnet of magnetic moment 200 A m2 is suspended in a magnetic field of induction 0.25 N A-1m-1. The couple required to deflect it through 30° is