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.



3 comments:

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