AP Physics C: E&M
12.4 Ampère’s Law
A long, straight, solid cylindrical wire of radius \(R\) carries a steady current \(I_0\) that is uniformly distributed across its cross-sectional area. Which of the following graphs best represents the magnitude of the magnetic field \(B\) as a function of the radial distance \(r\) from the central axis of the cylinder for \(0 \le r \le 3R\)?
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