Physics - The motor effect

Revision notes on the dreadful P3 topic Electomagnetism.

The motor effect

• The force is:
  (a) Greatest when the wire is perpendicular to the magnetic field
  (b) Zero when the wire is parallel to the magnetic field lines
• The force is increased by:
  (a) Increasing the current
  (b) Uusing a stronger magnet
• The direction of the force is reversed id the directpoin of the current or magnetic field…