Lorentz loop

Electricity and Magnetism Level 2

A square shaped conducting wire is held in a uniform magnetic field, and a current with intensity \(I\) is flowing through the wire clockwise. The conducting wire is on the \(xy\)-plane and the direction of the magnetic field is downward, perpendicular to the \(xy\)-plane. Which of the following explanations is correct?

a) The direction of the magnetic force on section ab of the wire is \(-y\) direction.
b) The directions of the magnetic forces on sections ad and bc of the wire are the same.
c) The net force of all the magnetic forces on the wire is zero.


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