motor effect

• describe motor effect 


  current carrying wire in another magnetic field will experience a force
• give rule to determine direction of experienced force

  left hand rule

  thumb - force

  first - magnetic field

  second - current
• give factors affecting experience force

  current size and strength of magnetic field
• describe electric motors

  1. coil in magnetic field experience rotational force
  2. split ring commutator on coil
  3. coil e
• describe electric motors 


  current carrying coil experience rotational force in magnetic field through use of split ring commutator
• describe affect of split ring commutator

  switch positive and negative connections every half turn ensuring constant one direction rotation
• describe loudspeakers 


  use motor effect to convert vibrations from alternating current into sound waves from pressure variations