WorksheetsCircuits
Total questions: 22
Worksheet time: 38mins
A closed circuit will be fully connected with no openings. Which of the following diagrams shows a closed, working circuit that allows the bulb to appear lit?
Diagram A
Diagram B
Diagram C
Diagram D
Which circuit could be cut at the letter X and still have bulbs lit?
Circuit A
Circuit B
Both Circuit A and Circuit B
Neither Circuit A nor Circuit B
Which would be true if the wire was cut at Location X?
Bulb Y and Bulb Z would be lit.
Bulb Y would be the only bulb lit.
Bulb Z would be the only bulb lit.
No bulbs would be lit.
Part of the circuit would be complete.
Which answers are true about the circuit above? Choose TWO answers.
LEDs 1 and 3 would be lit.
LEDs 2, 3, and 4 would be lit.
None of the circuit is complete.
Only the LED directly connected to the open switch would be unlit.
Only the LED directly connected to the open switch would be lit.
Electricity does not flow through an open circuit. Which of the following is an open circuit?
Circuit A
Circuit B
Circuit C
Circuit D
What is missing from this circuit? Why would the light bulbs be off?
The battery, there is no power for the circuit to work.
The switch is open, so the circuit is broken.
The third light bulb, that is needed to complete the circuit.
The wires are not connected properly.
This steel paperclip would allow electricity to flow through it because:
it is a conductor
it is an insulator
it is friendly
it breaks the circuit
This rubber ducky would block the flow of electricity, because:
it is a conductor
it is an insulator
it is yellow
it completes the circuit
Circuit "B" is working (it flows), because:
the switch is open
the switch is closed
the switch is black
the switch is not there
Circuit "A" is broken, because:
the switch is open
the switch is closed
the switch is black
the switch is not there
This circuit does not work. Which of these would allow the bulbs to light?
Open the switch and then connect the two wires that are attached to the wood block
Switch the positions of the two wires that are connected to the battery and then open the switch
Move the switch closer in the circuit to the battery
Connect the two wires that are attached to the wood block
A complete, connected circuit:
Closed Circuit
Open Circuit
Conductor Circuit
An incomplete or broken circuit.
Closed Circuit
Open Circuit
Cracked bulb Circuit
Part of a circuit that controls the open-ness or closed-ness of the electric flow.
Series Circuit
Parallel Circuit
Switch
Generator
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?
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
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
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
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.
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
A material that does not allow electricity to flow through the circuit is known as a _______________.
Conductor
Source
Transformer
Insulator
