A simple motor. Image credit youtube.com

A simple motor. Image credit youtube.com

ZIMSEC O Level Combined Science Notes: Electric motors

  • An electric motor converts electrical energy into kinetic energy
  • This is caused by the interaction of the electrical field of the coil and
  • The magnetic field of the magnets in the motor
  • A current carrying wire moves when it is placed in a magnetic field
The basic fields of a wire and magnetic field and how they create movement

The basic fields of a wire and magnetic field and how they create movement

  • This is because the wire has a field around it that looks like the one shown above
  • The area around a magnet is called a magnetic field
  • It is has lines of force emanating from the poles of the magnet
  • The fields between the poles look like the ones shown in the diagram above
  • When these two fields: the wire’s field and the magnet’s field are
  • Superimposed on top of one another they change shape
  • The resultant force, due to the interaction of these two forces
  • Pushes the wire downwards as shown in the diagram above
  • An electric motor is a perfection of this technique

To access more topics go to the Combined Science Notes page.


Quick NetOne, Telecel, Africom, And Econet Airtime Recharge

If anything goes wrong, chat with us using the chat feature at the bottom right of this screen