6. A long straight wire with circular cross section and radius 1.5 cm carries a 1.2...
6. A long straight wire with circular cross section and radius 1.5 cm carries a 1.2 A current uniformly distributed throughout the wire.
a) What is the current density in the wire?
b) What is the magnetic field as a function of r at a point inside the wire?
c) What is the magnetic field as a function of r at a point outside the wire?
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