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A magnetic dipole of moment M is placed in uniform magnetic field B so that angle betweem direction of M and B is `theta`,the torque acting on the magnetic dipole is

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CBSE COMPLEMENTARY MATERIAL-UNIT–III & UNIT–IV MAGNETIC EFFECTS OF CURRENT AND MAGNETISM & E.M.I. AND ALTERNATING CURRENT-SHORT ANSWERS QUESTIONS (3 Marks)
  1. State Ampere's circuital law. Use this law to obtain the expression fo...

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  2. (a)Using Ampere's circuitlal law,obtain the expression for the magneti...

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  3. A magnetic dipole of moment M is placed in uniform magnetic field B so...

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  4. A moving coil galvanometer has N number of turns in a coil of effectiv...

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  5. One of the two identical conducting wires of length L is bent in the f...

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  6. Obtain an expression for the self inductance of a straight solenoid of...

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  7. In a series L–C–R circuit XL, XC and R are the inductive reactance, ca...

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  8. Name four applications of Eddy currents.

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  9. (i) An a.c. Source of voltage V = V(0) " sin " omegat is connected...

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  10. A voltage, E = E(0) sin omega t is applied across an inductor L. Obtai...

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  11. The energy stored in an inductor of self-inductance L henry carrying a...

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  12. A conducting rod held horizontally along East-West direction is droppe...

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  13. In an LC circuit, resistance of the circuit is negligible. If time per...

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  14. In an LC circuit, resistance of the circuit is negligible. If time per...

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  15. In an LC circuit, resistance of the circuit is negligible. If time per...

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  16. An alternating voltage of frequency f is applied across a series LCR c...

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  17. Fig. show three alternating circuits with equal currents. If frequency...

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  18. Study the circuit (a) and (b) shown in Fig. and answer the following q...

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  19. Can the instantaneous power output of an ac source ever be negative ? ...

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  20. A device ‘X’ is connected to an AC source. The variation of voltage, c...

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