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- 1. Multiple Choice
A student wants to make a change to the circuit shown so that when Switch 1 is open and Switch 2 is closed, only one light will be on in the circuit.
- 2. Multiple Choice
Why is a battery important in an electrical circuit?
As a source of energy.
As a path for electricity to flow through.
As a connector to connect all parts of a circuit.
- 3. Multiple Choice
A student constructs the circuit shown for a science demonstration. With the switches in these positions, which lights are on?
All the lights
Light bulbs 1 and 2 only
Light bulbs 3 and 4 only
None of the lights
- 4. Multiple Choice
Look at the diagram. Why did the bulb not light up?
The bulb was fused.
The battery had not enough electric current to light up the bulb.
The switch was opened and prevented electric current from flowing through the circuit.
- 5. Multiple Choice
Students constructed a circuit using different-colored lightbulbs. What will happen if Switch 3 is closed and the other switches are left open?
Only the white bulb will operate
None of the bulbs will operate
Only the white and yellow bulbs will operate
Only the red and blue bulbs will operate
- 6. Multiple Choice
Look at the diagram. When the switch is closed, the iron nail attracted the steel clips. Why?
The iron nail produced electric current to attract the steel clips.
The iron nail became a magnet and attracted the steel clips.
The iron nail is a conductor of electric current in the circuit.
- 7. Multiple Choice
The circuit has 3 lightbulbs and a bell. Which procedure will result in only the blue lightbulbs operating?
Close switches 1 and 2 and leave switch 3 open
Close switch 3 and leave switches 1 and 2 open
Close switches 2 and 3 and leave switch 1 open
Close switch 2 and leave switches 1 and 3 open
- 8. Multiple Choice
What makes up an electric circuit?
Bulb and battery
Bulb, battery and switch
Bulb, battery and wire
- 9. Multiple Choice
A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?
Light bulb 1 and light bulb 2 will both be on
Light bulb 1 will be off, but light bulb 2 will be on
Light bulb 1 and light bulb 2 will both be off
Light bulb 1 will be on, but light bulb 2 will be off
- 10. Multiple Choice
Why must parts of a circuit be properly connected before the bulb can light up?
To ensure that the bulb can light up.
To ensure that the battery can produce light in a closed circuit.
To ensure that electric current can flow through the closed circuit.
- 11. Multiple Choice
The diagram shows a complete circuit but the bulb did not light up. Why?
The plastic spoon is an insulator of electricity and prevented electric current from flowing through the circuit.
The plastic spoon is not connected properly and prevented electric current from flowing through the circuit.
The plastic spoon is a conductor of electricity and prevented electric current from flowing through the circuit.
- 12. Multiple ChoiceIn the picture, if you replace the paper clip with a plastic spoon, what happens?The bulb doesn't lightThe bulb is dimmerThe wires get hotThere is no charge
- 13. Multiple Choice
Look at the circuits in the diagram. In which circuit will the bulb be brighter?
Circuit A
Circuit B
Both circuits, the bulbs will have the same brightness.
- 14. Multiple Choice
State one advantage of bulbs arranged in parallel arrangement in a circuit.
When one bulb fused the other can still light up.
Reduce the amount of electric current used for both bulbs.
Both bulbs in a parallel arrangement in circuit will share the electric current produced by the battery.
- 15. Multiple Choice
Look at the circuits in the diagram. In which circuit will the bulb be brighter?
Circuit C
Circuit D
Both circuits, the bulbs will have the same brightness.
- 16. Multiple Choice
When a circuit is open, the circuit is _________?
On
Off
- 17. Multiple Choice
Look at the circuits in the diagram. In which circuit will the bulb be brighter?
Circuit A
Circuit B
Both circuits, the bulbs will have the same brightness.
- 18. Multiple Choice
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulates electricity
- 19. Multiple Choice
If no changes are made to this circuit, what will the results be?
Both bulbs are off because the switch is open
Only the left bulb is lit because it has a closed path. The right bulb is not lit because of the open switch
Both bulbs are lit because they each have a complete, closed path to the battery
Only the right bulb is lit because an open switch causes the energy to flow to the bulb.
- 20. Multiple Choice
Jay uses various objects to complete a circuit. He compares how bright a bulb glows using each object. His results are shown here.
Which object is the BEST electrical conductor?
nail
eraser
crayon
pencil lead
- 21. Multiple ChoiceA fifth grade class constructed this circuit. Which of these objects most likely made the light glow when connected to points X and Y?plastic strawcotton stringaluminum foilrubber eraser
- 22. Multiple ChoiceWhich light will be brighter and why?Bulb A because its circuit is closedBulb B because its circuit is closedBulb B because it has more voltsBulb A because it has less volts
- 23. Multiple Choice
Look at the four ways that you could connect a battery, a paper clip, a light bulb, and some wire.
Which one of these would light the bulb?
- 24. Multiple Choice
The circuit in this picture has a battery, a light bulb, and three switches. All of the switches are open, and the light bulb is off.
Which of these combination of switches could be closed and cause the light bulb to remain off?
X and Y
Y and Z
X and Z
X, Y,, and Z
- 25. Multiple Choice
Sara wants to make an electric circuit. She gathers the items shown here.
What other item does Sara need to make a complete circuit.
a battery
a switch
an insulator
a conductor
- 26. Multiple Choice
Philip needs to choose an item to use to complete a circuit he is making.
Which of the following items would be his BEST choice?
metal coin
glass bead
plastic straw
wooden toothpick
- 27. Multiple Choice
Brayson made the circuit shown here in his science class. What is the most likely reason that the bulb is not lit?
The bulb is cracked.
He did not use the right size battery.
He used too many pieces of wire.
He left the switch open.
- 28. Multiple Choice
The rubber coating on a wire cord is __________________ because it does not allow electricity to pass through to you.
magnetic
a conductor
an insulator
a circuit
- 29. Multiple Choice
The picture shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow? (5.6B)
0
1
2
3
- 30. Multiple Choice
The student place different objects in the gap and turn on the switch to see if the light bulb lights up. Which object will best conduct electricity?
A glass bead because it allows electricity to flow through
A plastic button because it allows electricity to flow through
A copper coin because it allows electricity to flow through
A wooden toothpick because it allows electricity to flow through
- 31. Multiple Choice
A material that does not allow electricity to flow through the circuit is known as a _______________.
Conductor
Source
Transformer
Insulator
- 32. Multiple Choice
A material that allows electricity to flow through the circuit without disruption is known as a _______________.
Switch
Transformer
Conductor
Source
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