Circuits

What is a switch's function in a circuit?

• to make the current hotter or colder
• turn on and off the flow of electrical current
• the pathway that electrical current flows
• to add more power to the circuit

This circuit is .....?

• open
• parallel
• closed
• shows the flow of electricity

Which of these best completes the circuit?

• rubber band
• metal nail
• leather shoelace
• wooden toothpick

Which of the following can supply energy in an electric circuit?  

•  a conductor
• light bulb
• a wire
• a battery 

Look at the picture.  Why won't the light bulb light up?

• The wires from the light bulb are not connected to the battery
• The switch is not closed to form a complete circuit 
• The wires from the light bulb are not connected to the switch 
• The wires from the battery are not connected to the switch 

Look at the picture.  What causes the light bulb not to light up?

• The wires from the second light bulb are not connected to the battery
• The wires are not connected between the light bulbs 
• The wires are not connected to both sides of the first light bulb
• The wires are too long to complete the circuit 

A series circuit has ____ path(s) that the electric current can take. 

• One
• Two 
• Three 
• Four

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

What is a Parallel circuit? 

• Has only one path 
• Has more than one path 
• Allows energy to travel through easily 
• Has only one light bulb

1. Which switch or switches must be closed to make the lamp A light?

• Only switch a and c

• Only switch b

• Switches a and b

• Switches a , b and c