Step 1: The magnetic field due to a long straight wire is given by the formula:
$$B = \frac{\mu_0 I}{2 \pi r}$$
where:
* $B$ is the magnetic field strength
* $\mu_0$ is the permeability of free space ($4\pi \times 10^{-7} T \cdot m/A$)
* $I$ is the current in the
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