Electricity Recap

What is the best definition for potential difference?

• the potential energy per electron.

• the potential energy per unit of charge.

• the kinetic energy per unit of charge.

• the energy carried by an electron.

The diagram shows a temperature sensing circuit used to control a heating system in a house.

What quantity does the ammeter measure? (One correct word only needed)

This is the symbol for a _____?

• an AC current source
• a DC current source
• a battery
• a single cell

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm
• 3 Ohms
• 4 Ohms
• 12 Ohms

Current is...

• moving protons
• moving electrons
• measured in volts
• measured in ohms

If the Voltage is increased and the resistance stays the same, Current will

• Increase
• Decrease
• Stay the same
• Not enough info

If lamp 2 is unscrewed from its holder, what will happen to lamp1?

• It will stay lit

• It will go out

• It will get dimmer

• It will dissapear

An example of an insulator of electricity is.....

• Rubber

• Silver

• Iron

• Copper

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

Which resistor has the biggest voltage across it?

• 2 Ω

• 3 Ω

• 4 Ω

• all have the same