Electrical Energy

Which material would make the best insulator?

• Wood
• Plastic
• Copper
• Steel

Which material would make the best conductor?

• paper
• copper
• glass
• wood

Which statement is true?

• The light bulb will light up because the  circuit is complete.
• The light bulb will light up because the  circuit is broken.
• The light bulb will not light up because the  circuit is complete.
• The light bulb will not light up because the  circuit is broken.

In addition to mechanical energy, which of these is produced as electric current passes through the fan?

• Water vapor
• Light
• Mass
• Heat

When plugged in, these lights will either be all on or all off.  Why?

• the bulbs will wear out all at once
• the electric current flows separately to each color bulb
• the electric current flows from one light bulb to the next
• the electric current flows cannot flow very easily through the bulbs

An electrician is wearing rubber gloves for protection.  The purpose of the rubber gloves is to --

• keep the electrician dry
• create an electrical circuit
• produce electricity
• protect the electrician

Which form of energy is being used by the toaster?

• chemical
• electrical
• solar
• nuclear

This image represents what type of circuit?

• open
• closed
• series
• parallel

When something opposes the flow of current it is known as:

• resistor
• stinker
• conductor
• insulator

What type of circuit is represented by the diagram?

• closed
• series
• open
• parallel