The Simple Electric Motor Flashcards
1
Q
What two factors speed it up?
A
More current
Stronger magnetic field
2
Q
How does the coil being on a spindle affect it?
A
Thé forces act one up and one down so it rotates
3
Q
What is the split ring commutator?
A
À clever way of swapping the contacts every half turn to keep the motor rotating in the same direction
4
Q
How can the direction of the motor be reversed?
A
By swapping the polarity of the direct current supply or by swapping the magnetic poles over
5
Q
What happens if you like the coil to an axle?
A
The axle spins round
6
Q
What can you attach to a motor axle to make it spin?
A
Almost anything
CD player, good mixer, fan heaters, and hair dryers
