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WorksheetsCircuits
Total questions: 59
Worksheet time: 1hrs 5mins
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
Which of these changes to the electric circuit shown will cause the lightbulb to light up? (5.6B)
Straightening the wire so that the current can flow more easily
Adding a switch and more wire so that the current can flow more easily
Turning one battery so that its positive end connects to the other battery's negative end
Making the length of wire the same on both sides of the lightbulb
A string of light with small bubs is shown here. The bulbs are connected by wire that is covered with an insulator. When the lights are on, electricity travels in ----(5.6B)
a complete circuit
a sound wave
a light ray
an incomplete path
The diagram shows the metal posts that are usually found on a battery. The battery can be connected to a bell and a switch to produce sound. Which statement best explains why there are two metal posts on the battery? (5.6B)
The battery needs only one metal post to connect to the bell, but the other metal post is present in case the first post fails to work.
The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post.
One metal post makes a complete circuit with the switch, and the other metal post makes a complete circuit with the bell.
One metal post makes the bell start to ring, and the other metal post makes the bell ring louder.
Most cars have lights, power locks, radios, and other equipment that use electricity. Electric circuits power this equipment. Each circuit has a fuse that completes it. The picture below shows one type of fuse a car may have. Which of these describes one thing that could happen if the wire in a car fuse burns out? (5.6B)
The car's lights will burn brighter.
The car's radio will not work.
The car's turn signal will blink too slowly.
The car's power windows will open faster.
A group of students built the circuit shown here. The lightbulb does not glow. Which statement explains this observation? (5.6B)
The battery is not charged.
The lightbulb is not part of a complete circuit.
The circuit does not have a switch.
The bell uses most of the energy from the battery.
A simplified diagram of a system using solar energy is shown. To recharge the battery for later use without lighting the bulb, which of the following switches should be closed? (5.6B)
Switch S only
Switches R and S only
Switches R and T only
Switches R, S, and T
All the lightbulbs in this circuit are lit. Which change would cause all the bulbs to go out? (5.6B)
Removing Wire 1
Removing Wires 2 and 4
Removing Wires 2 and 5
Removing Wires 3 and 4
Students constructed a circuit using different-colored lightbulbs. What will happen if Switch 3 is closed and the other switches are left open? (5.6B)
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.
This circuit has three lightbulbs and a bell. Which procedure will result in only the blue lightbulbs operating? (5.6B)
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
The diagram shows an electric circuit with four bells that a student plans to build. When the student connects the wires as shown, which of the bells will ring? (5.6B)
Bell 1 only
Bells 1 and 4 only
Bells 3 and 4 only
Bells 1, 2, 3, and 4
In some circuits that are used for decorating, one burned-out lightbulb will prevent all the other lightbulbs from lighting. In other circuits, one burned-out lightbulb will have no effect on the lightbulbs. In which of these circuits will the other lightbulbs still light even if one bulb is burned out? (5.6B)
This circuit has five light-emitting diode, or LED, lights. It also has one battery and one switch. Which LEDs produce light when the switch is in the position shown? (5.6B)
LEDs 1, 3, and 4 only
LEDs 1, 2, 3, and 4
LEDs 3 and 4 only
LEDs 1, 3, 4, and 5
The circuit shown does not work. Which procedure would most likely allow the bulbs to light? (5.6B)
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 the open the switch
Move the switch closer in the circuit to the battery
Connect the two wires that are attached to the wood block
Why electrical wiring usually are covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulate electricity
Which of the following materials is an electrical conductor?
Plastic spoon
Silver-colored plastic spoon
copper spoon
wooden spoon
A material that does NOT let electricity pass through it is called ...
An electrical conductor
An electrical insulator
An electrical source
An electric appliance
To complete the circuit, a wire should be placed from —
When the switch is closed the buzzer will sound because -
What do you call an object that allows electricity to flow through it?
Radiator
Energy
Conductor
Insulator
Something that stops the flow of energy is called a(n)
buzzkill
resistor
insulator
conductor
