A long solenoid has 500 turns.When a cur...

A long solenoid has 500 turns.When a current of 2 ampere is passed through it, the resulting magnetic flux linked with each turn of the solenoid is `4xx10^-3` `Wb`. The self inductance of the solenoid is :

`2.5henry`

`2.0henry`

`1.0henry`

`4.0henry`

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