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

What part of a circuit is this object?

• power source
• load
• pathway
• switch

Insulator or Conductor?
STEEL

• Insulator
• Conductor

Insulator or Conductor?
STYROFOAM

• Insulator
• Conductor

A __________opens and closes a circuit?

• key
  key
• magnet
• switch
• electromagnet