Electricity and Magnetism Test

ALL magnets have a (n) ____________________________

• North pole
• South pole
• East and west pole 
• North and south pole

The area surrounding magnets where there is an attraction or a repulsion is called the:

• electrical field
• magnetic charge
• magnetic field
• electrical charge

Insulator or Conductor?
STYROFOAM

• Insulator
• Conductor

Permanent magnets are called____________________

• Bar magnets because bar magnets can be turned on and off.
• Bar magnets because they cannot be turned on and off and cannot be demagnetized.
• Electromagnets because they cannot be demagnetized.
• Electromagnets because they are powered by electricity and can be demagnetized.

Insulator or Conductor?
STEEL

• Insulator
• Conductor

Temporary magnets are called____________________

• Bar magnets because bar magnets can be turned on and off.
• Bar magnets because they cannot be turned on and off and cannot be demagnetized.
• Electromagnets because they cannot be demagnetized.
• Electromagnets because they are powered by electricity and can be demagnetized.

Which of the following is NOT a reason why parallel circuits are used?

• Because Parallel Circuits are brighter than series circuits
• Because Parallel Circuits don’t require all of the lights to be on at the same time
• Because Parallel Circuits require all of the lights to be on at the same time
• Because Parallel Circuits save on electricity bills

What happens when you disconnect electromagnets from an energy source?

• They break apart, causing the poles to stop attracting each other.
• They demagnetize because the electrical current creating the magnetism has lost its energy source.
• They demagnetize because the poles have switched positions.
• They demagnetize because both poles become positive when the energy source is disconnected.

_____________ turns a circuit on or off.

• A load
• A switch
• A power source
• A wire

Opposite charges:

• attract
• repel
• create an electrical current
• create a magnetic field