Moving Charges and Magnetism.

12 lessons125 min10 simulations10 practice questions

This chapter shows that moving charges both make magnetic fields and feel them. It sets out the Lorentz force and the force on a wire, follows charges round circles and helices in a uniform field, builds fields from currents with the Biot–Savart law and Ampere's circuital law (loop, straight wire, solenoid), and ends with forces between wires, the torque on a coil, the loop as a magnetic dipole and the moving coil galvanometer.

Also called: magnetic effect of current · Biot-Savart law · Ampere's law · cyclotron