In a current-carrying long solenoid,the magne | vedclass

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(C) The magnetic field $B$ at the center of a long solenoid is given by the formula:$B = \mu_0 n i$where $n$ is the number of turns per unit length $(

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Radius of the solenoid

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(C) The magnetic field $B$ at the center of a long solenoid is given by the formula:$B = \mu_0 n i$where $n$ is the number of turns per unit length $(n = N/l)$,$i$ is the current flowing through the solenoid,and $\mu_0$ is the permeability of free space.From this formula,it is evident that the magnetic field $B$ depends only on the number of turns per unit length $(n)$ and the current $(i)$.It does not depend on the radius of the solenoid.Therefore,the correct option is $C$.

In a current-carrying long solenoid,the magnetic field produced does not depend upon:

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