Electricity Basics

A closed path that electric current flows is a

• circuit
• wire
• track
• hallway

When a switch is _________________, electric current can move through the circuit.

• off

• on

How do wires work?

• they become an electrical charge
• they bend electricity easily
• they keep the charge from moving randomly
• they allow a current of electricity to flow 

Look at this circuit - what is wrong with it?

• too many motors

• there is a gap in the circuit

• there is nothing wrong

• too many cells

Why is there a plastic coating around a metal wire?

• so it looks nice

• to insulate electricity

• to keep the wire warm

• to conduct electricity

How does a generator make electricity?

• By burning coal
• By shaking batteries
• By spinning a magnet inside a coil of wire

Why is electrical wire made from metal?

• to insulate electricity

• so they can bend easily

• to conduct electricity

• because metal is cheap

Electronic devices that require more than normal amount of energy have how many prongs?

• 2

• 3

• 4

• none of the above

What is the purpose of the ground wire in a 3-pronged plug?

• Helps get a better fit into the outlet.

• Allows for a lower than normal current of electricity

• For Safety ... Helps to direct "overflow" or "surges" of electricity into the ground.

• No real purpose, it was time to change the style of the outlet.

What metal is used for electrical wires?