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A square current carrying loop of side ’a’ produced magnetic field at its centre is ’B’. Find magnetic moment of this loop in terms of ’B’.

Important Questions on Magnetic Effect of Current

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 57

A wire of length 'l’ carries a current bent into various regular polygons shown below. Find magnetic moment in terms of length of the wire. Circular loop.

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 58
A current carrying wire of length ’l’ is bent to form a circular coil of one turn. After that it is again bent to form a circular coil of two turns. Find ratio of magnetic moment of coils respectively. 
 
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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 60
 Two identical current carrying coils are concentrie and perpendicular to each other. If magnetic moment of each coil is ’M’. Find resultant magnetic moment of two coils. 
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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 63
 A bar magnet has a magnetic moment 2.5 JT–1 and is placed in a magnetic field of 0.2 T. Work done in turning the magnet from parallel to antiparallel position relative to the field direction is 
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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 64
A circular coil of ‘N’ turns, ‘R’ radius carries a ‘i’ current. Work done in rotating this coil in an external magnetic field from θ1=0º to θ2=90°:- 
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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 66
Magnetic moment and angular momentum of an orbital electron are ’M’ and L respectively. The specific charge of the orbital electron:
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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 67
A particle of charge ’q’ and mass ’m’ is moving in a circular orbit with angular speed 'ω'. The ratio of its magnetic moment to that of its angular momentum depends on:- 
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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Previous Year Questions)>Q 68
Magnetic moment of orbital electron in first orbit is µB then magnetic moment of that electron in third orbit :-