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Define self inductance....

Define self inductance.

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Inductance of a coil is numerically equal to the emf induced in it ,when the rate of change of currect through it is unity.
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Define self inductane of a solenoid. On what factors does it depend ?

A solenoid having a core of cross - section 4xx10^(-4) m^2 , half air and half iron (mu_r=500) is 0.22m long. If the number of turns in it is 1000, then calculate the self inductance.

Say whether self inductance is a vector quantity or not. Write the dimensional formula for self inductance.

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Current in a coil falls from 5 A to 0 A in 0.1 s, calculate the induced emf in a coil if its self inductance is 4H.

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SUBHASH PUBLICATION-ELECTROMAGNETIC INDUCTION-NUMERICALS WITH SOLUTIONS
  1. Define self inductance.

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  2. Two coils wound on the same iron rod so that the flux generated by one...

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  3. A pair of adjacent coils have a mutual indutance of 0.25 H . If the cu...

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  4. A solenoid 0.70 m in length and of 2100 turns has a radius 4.5xx10^(-2...

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  5. A solenoid having a core of cross - section 4xx10^(-4) m^2 , half air ...

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  6. The current in a coil of 20 mH changes from 2.5 A to 3A to in 1/(100) ...

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  7. Current in a coil changes from 4A to 0A in 0.1 s. If the average emf i...

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  8. Calculate the self inductance of a solenoid of length 0.30 m containin...

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  9. Calculate the induced emf in the solenoid , if the current decreases a...

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  10. A small dc motor operating at 200 V draws a current of 5.0 A at its fu...

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  11. Calculate the equivalent inductance between A and B from the following...

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  12. A square metal wire loop of side 0.10 m and resistance 1 Omega is move...

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  13. A long solenoid with 15 turns per cm has a small loop of area 2.0 cm^2...

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  14. A rectangular wire loop of sides 8 cm and 2 cm with a small cut is mo...

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  15. A rectangular wire loop of sides 8 cm and 2 cm with a small cut is mo...

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  16. A circular coil of radius 8.0 cm and 20 turns, is rotated about its ve...

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  17. A horizontal straight wire 10 m long extending from east to west is fa...

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  18. A horizontal straight wire 10 m long extending from east to west is fa...

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  19. A horizontal straight wire 10 m long extending from east to west is fa...

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  20. An air cored solenoid with length 30 cm , area of cross section 25 cm ...

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