Question: An electric current is uniformly distributed throughout a long, straight wire that has a diameter of (50 mathrm{~mm}). If the current through the wire is

An electric current is uniformly distributed throughout a long, straight wire that has a diameter of $50 \mathrm{~mm}$. If the current through the wire is $6.0 \mathrm{~A}$, calculate the magnitude of the magnetic field (a) $20 \mathrm{~mm}$ radially away from the wire center and $(b) 50 \mathrm{~mm}$ radially away from the wire center. (c) What must the current be to create a magnetic field of magnitude $1.0 \mathrm{~T} 50 \mathrm{~mm}$ radially away from the wire center?

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