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Write down formula for magnetic field due to a short bar magnet at equatorial position. What is angle between magnetic field and magnetic dipole moment of the bar magnet at equatorial position?

Important Questions on Magnetism and Matter

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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 36
Soft iron is preferred for making the core of a transformer, why?
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 37
State Curie law in magnetism.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 38
What do you mean by hard magnetic material?
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 39
Why is diamagnetism almost independent of temperature?
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 40
A short bar magnet has a magnetic moment of 0.64 J T-1. Find magnitude of magnetic field produced by magnet at distance of 10 cm from its centre on the equatorial line of the magnet. Also write the direction of magnetic field.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 41
A circular coil of 20 turns and radius 10 cm carrying current of 0.080 A rests with its plane normal to an external magnetic field of magnitude 2.0×10-2 T. When coil is turned by 30°, find magnitude of field torque on the coil.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 42
A bar magnet of magnetic dipole moment 12 A m2 has magnetic length 48 cm. Calculate the pole strength.
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Gamma Question Bank for Medical Physics>Chapter 20 - Magnetism and Matter>Assignment Set-1>Q 43
Whether it is possible that a magnet has No poles.