Current Electricity

An example of a conductor is :

• a glass paperweight

• a plastic cap

• a metal screw

• a wooden handle

In a series circuit  with 4 bulbs:

• a switch is never used

• all of the bulbs become dimmer if another bulb is added

• There are many paths for electricity to take

• the remaining 3 bulbs stay lit if one burns out

An example of an insulator is:

• iron

• silver

• copper wire

• rubber

All wires used in electric circuits should be covered with:

• a colored material.

• a conducting material.

• an insulating material.

• none of these.

What is the difference between a conductor and an insulator?

• An insulator allows electricity to flow through it easily and a conductor does not

• A conductor allows electricity to flow through it easily and an insulator does not.

• An insulator is magnetic and a conductor is not

• A conductor is magnetic and an insulator is not

What happens to the brightness of the light bulbs in a series circuit when you add more lights.

• Each bulb gets dimmer

• Each bulb remains the same

• Half of the bulbs get dimmer

• Each bulb gets brighter

Insulator or Conductor?
STEEL

• Insulator

• Conductor

Insulator or Conductor?
STYROFOAM

• Insulator

• Conductor

A __________opens and closes a circuit?

• key
  key

• magnet

• switch

• electromagnet

What are the components of a simple circuit?

• wires, switch, outlet

• battery, switch, motor

• wires, light bulb, motor

• wires, battery, light bulb