A current of 1.6 A flows through a long ...

A current of 1.6 A flows through a long solenoid, having 8 turns/cm. The magnetic induction at the end of the solenoid along its axis is

`12 xx 10^(-4)T`

`16 x10^(-4)T`

`6 xx 10^(-4)T`

`8 xx 10^(-4)T`

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The correct Answer is:

`n=8` turns/cm=800 turns/m and `B=(mu_0ni)/2-= 8 xx 10^(-4)T`

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