Saturday, April 23, 2011

Physics Form 5: Chapter 3 - Direct Current Motor

How the motor is able to rotate:
  • The flow of current produces a magnetic field in the coil / armature
  • Magnetic field generated by the current interact with the magnetic field of permanent magnet.
  • The resultant magnetic field produced is called a lastic field / catapult field.
  • The lastic field causes two forces acting on the rectangular coil in opposite directions which enable the rotation.


Tan Kit said...

use what rules?
Fleming left hand?

Cikgu Wong said...

Dear Tan Kit,
Yes, use Fleming left hand rule to determine the rotation of motor.

Anonymous said...

Sir- i dont really understand what is this. can you eloborate it more specific pelasee? thank you