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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

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Answer Text

`12 xx 10^(-4)T``16 x10^(-4)T``6 xx 10^(-4)T``8 xx 10^(-4)T`

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

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