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A solenoid has a core of material with relative permeability 500 and its windings carry a current of 1 A. The number of turns of the solenoid is 500 per metre. The magnetization of the material is nearly
 

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Important Questions on Magnetism

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 23

The basic magnetization curve for a ferromagnetic material is shown in figure. Then, the value of relative permeability is highest for the point

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Critical Thinking>Q 24
Two identical pieces of metal wires are used to make a circular loop and a square loop. Same current is passed through both the loops, the ratio of magnetic moment associated with the circular loop to that of the square loop is
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Competitive Thinking>Q 1
A current I is flowing in a conductor of length L. When it is bent in the form of a circular loop, its magnetic moment will be  
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Competitive Thinking>Q 2

A coil carrying current I has radius r and number of turns n. It is rewound so that radius of new coil is r4 and it carries current 'I'. The ratio of magnetic moment of new coil to that of original coil is 
 

 

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Competitive Thinking>Q 3
A circular coil of radius 10 cm and 100 turns carries a current 1 A. What is the magnetic moment of the coil?
 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Competitive Thinking>Q 4
A bar magnet of length 10 cm and having the pole strength equal to 10-3 Weber is kept in a magnetic field having magnetic induction (B) equal to 4π×10-3 T . It makes an angle of 30° with the direction of magnetic induction. The value of the torque acting on the magnet is μ0=4π×10-7Weber A m )

 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Competitive Thinking>Q 5
A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is 
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Magnetism>Competitive Thinking>Q 6
The ratio of magnetic dipole moment of an electron of charge e and mass m in Bohr's in hydrogen atom to its angular momentum is