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When current passing through a coil is m...

When current passing through a coil is made doubled, its self inductance ......

A

becomes doubled

B

becomes half

C

becomes one fourth

D

remains constant

Text Solution

Verified by Experts

The correct Answer is:
D
Self inductance of a coil is given by
`L=Phi/I`
Here `Phi prop I` and so ratio `Phi/I` remains constant through we change I. Hence `L=Phi/I` does not depend on current passing through the coil.
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KUMAR PRAKASHAN-ELECTROMAGNETIC INDUCTION-Section D MCQs (From DARPAN Based on Textbook )
  1. Self inductance of a solenoid is directly proportional to

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  2. Dimensional formula of self inductance is ......

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  3. When current passing through a coil is made doubled, its self inductan...

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  4. Two identical coils, each with self inductance L, are connected in ser...

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  5. Equivalent self inductance of above arrangement is

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  6. Series combination of 10Omega resistance and 5 cm long solenoid havin...

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  7. Two coils have a mutual inductance of 0.005H. The current changes in t...

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  8. For an inductor having self inductance 4.6 H, emf induced in it for ti...

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  9. Find mutual inductance of two coaxial solenoids of equal length 30 cm ...

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  10. A coil of resistance 20Omega and self-inductance 5 H connected with b...

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  11. The unit of inductance is equivalent to …..

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  12. A solenoid has radius r and length l carries a current I. If the numbe...

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  13. Current I is following through a toroidal solenoid of radius r, length...

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  14. If N is the number of turns in a coil, the value of self inductance va...

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  15. If number of turns in a coil is increased from 10 to 100, its inductan...

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  16. Two inductors each of self-inductance L is connected in parallel. If t...

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  17. Mutual inductance of system of two coils is 0.3 H. If the current in t...

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  18. The flux linked with each turn of coil is 0.1 Wb and total number of t...

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  19. As shown in the figure, the planes of two concentric coils are mutuall...

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  20. Two circular coils can be arranged in any of the three situations as s...

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