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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 andA increases

B

l decreases and A increases

C

l increases and A decreases

D

both l and A decreases

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CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. Which one of the following is the unit of self inductance of a coil?

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  2. If L is the inductance and R is the resistance, then the unit of -L/R ...

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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. Which one of the following units denotes the dimensions ML^2//Q^2, whe...

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  5. What is the dimensional formula for the coefficient of self induction?

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  6. A coil is wound on a frame of rectangular crosssection. If all the lin...

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  7. A metal plate is getting heated. It can be because Which is the wrong ...

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  8. In a step up transformer, the input voltage is 300 V and the output vo...

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  9. A step down transformer works on 220 volts a.c. mains. It is used to l...

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  10. A transformer has 250 volts applied to the primary and gives 4.6V in t...

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  11. The number of turns in the primary and secondary coils of a transforme...

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  12. In relation to a transformer, the relation np/ns= 20, indicate that

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  13. In an ideal transformer, the number of turns in the primary is 120 and...

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  14. A transformer is used to reduce the mains supplyof 220V to 22V.If the ...

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  15. The core of a transformer is laminated

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  16. A step down transformer of efficiency 80% is used on a 1000V line to d...

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  17. Henry is equivalent to

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  18. The primary winding of transformer has 200 turns and its secondary win...

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  19. A transformer is used to reduce the main supply of 220 V to11 V. If th...

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  20. The ratio of the turns in the primary and secondary coils of transform...

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