Moving Charges and Magnetism

A current

A current-carrying conductor produces a magnetic field around it. The direction is given by the right-hand grip rule: if the thumb points in the curre

This law gives the magnetic field

This law gives the magnetic field produced by a small current element. The field at a point is proportional to the current, the length of the element,

The line integral of the magnetic

The line integral of the magnetic field around a closed loop is equal to μ₀ times the total current passing through the loop. It is especially useful

A charged particle moving in

A charged particle moving in a magnetic field experiences a force perpendicular to both its velocity and the magnetic field. This force, called Lorent

A current

A current-carrying loop placed in a magnetic field experiences a torque that tends to align the loop’s plane perpendicular to the field. The torque is