Step 1: The magnetic field inside a solenoid is given by:
$$B = \mu_0 n I$$
where:
* $B$ is the magnetic field strength
* $\mu_0$ is the permeability of free space ($4\pi \times 10^{-7} T \cdot m/A$)
* $n$ is the number of turns per unit length
* $I$ is the current
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