Electromagnetism

decrease

increase

not affect

use less wire

have fewer wire coils around the nail

have more wire coils around the nail

use a plastic core

When a fan blows on a wire, it causes it to spin, creating a force.

When a fan blows on a wire, it causes it to spin, creating an electrical current.

When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy

battery--> magnet--> electrical current--> copper wire rotor--> mechanical energy

magnet--> mechanical energy--> copper wire rotor--> battery--> electrical current

magnet--> copper wire rotor--> mechanical energy--> battery--> electrical current

Electro motive force

Electromagnetic induction

generator energy conversion

induced voltage

Motor

Generator

raise and lower the apparent power levels

transfer DC voltage from the primary winding to the secondary winding

increase or decrease A.C voltage or A.C current levels

transform mechanical energy into electrical energy

step right

step left

step up

step down

step left

step right

step up

step down

less than 50 V

50 V

greater than 50 V

True

False