Magnetism - Motor and Generator effects

What is a permanent magnet

Any object that produces a magnetic field

What is a magnetic material

Any object that can be influenced by a magnet and has the potential to become a magnet

What is an induced magnet

A magnetic material that can that can have a magnetic field temporarily.

What metals can be induced magnets

NICS - Nickel, Iron, Cobalt, Steel

What are materials that loose magnetism quickly and slowly called

Loose magnetism quickly - Soft , Loose magnetism slowly - Hard

Give 4 ways to increase the strength of an electromagnet (Solenoid)

• Increase current

• Increase number of turns in coil with the same length

• decrease the length of coil with same number of turn

• soft iron core of solenoid

Give the function of a split ring commutator and its purpose for a motor

Swaps the positive and negative connections every half turn so that the forces on the coil will always be acting in the same direction.

Give 3 ways to increase the speed of rotations on a motor

• increase current

• increase number of coils

• use more powerful magnets

Give 3 ways to increase the potential difference in the generator effect

• increase magnet strength

• more wire or magnets quicker

• add more coils