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The self-inductance L of a solenoid of l...

The self-inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases as

A

l and A increase

B

l decreases and A increase

C

l increases and a decrease

D

both l and A decrease

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The correct Answer is:
B
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AAKASH SERIES-ELECTROMAGNETIC INDUCTION-EXERCISE-IA
  1. Consider the situation shown in the figure, If the current I in the lo...

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  2. A conducting bar is pulled with a constant speed v on a smooth conduct...

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  3. The self-inductance L of a solenoid of length l and area of cross-sect...

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  4. A conducting square loop of side l and resistance R is moving out of t...

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  5. A metalic square loop ABCD is moving in its own plane with velocity v ...

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  6. An electric potential difference will be induced between the ends of t...

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  7. A vertical rod of length l is moved with constant velocity v towards e...

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  8. A positive charge q moves along the line AB, which lies in the same pl...

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  9. A metallic ring is connected to a rod oscillates freely like a pendulu...

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  10. Figure shows tow bulbs B(1) and B(2) resistor R and inductor L, when ...

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  11. An inductor L, a resistanc eR and two identical bulbs B(1) and B(2) ar...

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  12. If the number of turns per unit length of a coil of solenoid is double...

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  13. A solenoid is connected to a battery so that a steady current flows th...

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  14. A coil of self-inductance L is connected in series with a bulb B and a...

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  15. The coefficient of mutual inductance of two coils depends on

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  16. Two circular coils can be arranged in any of three situations as shown...

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  17. When the plane of the armature of an ac. generator is parallel to the ...

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  18. A coil of self-inductance L is placed in an external magnetic field (n...

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  19. Switch S of the circuit shown in figure is closed at t = 0. If em...

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  20. The magnetic energy stored in a long solenoid of area of cross-section...

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