The current in a wire is uniformly distributed over the cross-sectional area of the wire.The radius of the wire is r.Where is the magnitude of the magnetic field generated by the current flowing through the wire greatest?
A)at the center of the wire
B)on the surface of the wire
C)at a perpendicular distance r from the surface of the wire
D)None are correct.

Question

Quizplus · Accepted Answer

The magnetic field generated by a current-carrying wire is greatest at the surface of the wire. According to Ampère's law, the magnetic field around a current-carrying conductor increases linearly with distance from the center to the surface, reaching its maximum at the surface.

The Current in a Wire Is Uniformly Distributed Over the Cross-Sectional