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A magnetic needls is kept in a non-unif...

A magnetic needls is kept in a non-unifrom magnetic field . It experinces

A

a torque but not a force

B

neither a force nor a torque

C

a force and a torque

D

a force but not a torque

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The correct Answer is:
3
Magnetic needle is placed is non-unifrom magnetic field.It experiences force and torque both due to unequal forces acting on poles.
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RESONANCE ENGLISH-ELECTRODYNAMICS-Exercise-3 PART-2
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  2. A charged particle of mass m and charge q moves along a circular path ...

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  3. A magnetic needls is kept in a non-unifrom magnetic field . It exper...

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  4. In a region, steady and uniform electric and magnetic fields are prese...

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  5. Needles N1, N2 and N3 are made of a ferromagnetic. a paramagnetic and ...

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  6. A long solenoid has 200 turns per cm and carries a current i. The magn...

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  7. Figure shows a long straight wire of a circular cross-section (radius ...

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  8. A current i flows along the length of an infinitely long, straight, th...

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  9. A charged particle with charge q enters a region of constant, uniform ...

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  10. A charged particle moves through a magnetic field perpendicular to its...

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  11. Two identical long conductin wires AOB and COD are placed at right ang...

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  12. Relative permittivity and permeability of a material are epsi(r) and m...

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  13. A horizontal overhead powerline is at height of 4 m from the ground an...

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  14. A current loop ABCD is held fixed on the plane of the paper as shown i...

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  15. A current loop ABCD is held fixed on the plane of the paper as shown i...

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  16. Two long parallel wires are at a distance 2d apart. They carry steady ...

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  17. A current I flows an infinitely long wire with cross section in the fo...

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  18. An electric charge +q +q moves with velocity vecv = 3hati + 4hatj + ha...

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  19. A thin circular disk of radius R is uniformly charged with density sig...

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  20. A charge Q is uniformly distributed over the surgace of non conducting...

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