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What is the self-inductance of an air-co...

What is the self-inductance of an air-core solenoid 1 m long, diameter 0.05 m, if it has 500 turns? Take, `pi^(2)=10`.

A

`3.15xx10^(-4)H`

B

`4.8xx10^(-4)H`

C

`5xx10^(-4)H`

D

`6.25xx10^(-4)H`

Text Solution

Verified by Experts

The correct Answer is:
D
`L=(mu_(0)N^(2)A)/(l)=(mu_(0)N^(2)(pir^(2)))/(l)`
`=(4pixx10^(-7)xx(500)^(2)xxpixx(0.025)^(2))/(1)`
`=6.08xx10^(-4)H`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 1
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  5. In a current carrying long solenoid, the field produced does not depen...

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  11. Two inductors of inductance L each are connected in series with opposi...

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  15. A coil resistance R and inductance L is connected to a battery of emf ...

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  18. An air-cored coil has a self-inductance of 0.1 H. A soft iron core of ...

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  19. Two coils A and B have 200 and 400 turns respectively. A current of 1 ...

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