EMF Inv.4

A circuit with a motor consists of the following:

• Motor

• Wires

• Battery

• All of the above

A motor has many components, they are

• Permanent magnets

• Electromagnets

• Commutator

• Rotor

• All the above

A generator is used to generate

• Chemical Energy

• Electrical Energy

• Kinetic Energy

• Mechanical Energy

A commutator's main function in a motor is to

• Make contact with the shaft

• Connects with the electromagnet

• Turn on and off like a switch

• Contain the rotor inside

The Shanghai maglev train uses electromagnetism to operate smoothly.

• Washing machine have electromagnets too.

• I was surprised to learn that door bells have electromagnets in them.

• A food processor has electromagnets in them.

• The above are all examples of using electromagnets.

A motor needs a source of energy to function. In class we used ____________ as an energy source

• Electrical Energy

• Mechanical Energy

• Chemical Energy

• Kinetic Energy

The generator in class used which type of energy to make it work

• Electrical Energy

• Chemical Energy

• Mechanical Energy

• Kinetic Energy

Energy can only be _______________.

• Created

• Destroyed

• Transferred

• Created or destroyed

Energy cannot be _______________.

• Created

• Destroyed

• Transferred

• created or destroyed

Any given time, how many electromagnets are turned on.

• One

• Two

• Three

• Four