Electrical Circuits Question Preview (ID: 45066)
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In science class, students investigate ways to build circuits. Which items should students choose to create a working electrical circuit?
a) 1 copper wire, wood chips and a lightbulb
b) 2 copper wires, a plastic straw and a lightbulb
c) two copper wires, a battery and a lightbulb
d) Wood chips, wires and a battery
Students were given materials to complete a circuit to turn on one light. The materials received were 2 wires, a AA battery, and various size lightbulbs. What is the variable in the experiment?
a) Wires
b) battery
c) size of lightbulbs
d) time of day
How many paths does a series circuit have?
a) 1
b) 2
c) 3
d) 4
How many paths does a parallel circuit have?
a) Less than 1
b) Only 1
c) 2 or more
d)
Which of the following is a correct statement?
a) A series circuit can be detached from a battery source and still work properly
b) A parallel circuit is used in homes because they have only one path for energy to flow through
c) Parallel circuits allow from some bulbs to be off and others to still function properly due to having more than 1 energypath
d) If a switch is open, then the circuit is considered closed and will function correctly
Which part of a circuit is the energy source?
a) wire
b) bulb
c) battery
d) switch
Which of these could NOT be used to replace a wire in a circuit?
a) iron nail
b) plastic straw
c) steel spoon
d) aluminum foil
Electricity can produce
a) light
b) heat
c) sound
d) all of the above
When wires are connected to a battery and a lightbulb in a circuit, the lightbulb is lit. Which types of energy are produced by the battery and lightbulb?
a) electrical and light
b) sound and light
c) electrical and sound
d) light and sound
A student forgets to use a plastic coated wire and notices that the wire connecting to the battery is very hot. Which statement below explains why the wire is hot?
a) The wire is not insulated and electrical energy from the wire produces heat
b) The wire is not insulated and electrical energy flowing from the battery produces heat
c) The wire is not insulated and electrical energy from the bulb heats the wire.
d) The wire is not insulated and electrical energy from the switch produces heat.
Students decides to investigate what is required to make a complete path through which an electric current can pass. The students use different objects to see if they can produce heat. Why is it important for students to repeat their investigation?
a) to formulate a new hypothesis
b) to record accurate data
c) to test additional objects
d) to communicate a written conclusion
Students experiment with the flow of electricity in circuits. The teacher instructs them to wear rubber gloves during the experiment because
a) rubber gloves are insulators
b) rubber gloves are conductors
c) rubber gloves keep the student dry
d) rubber gloves allow electricity to flow
What process causes electricity to flow in a circuit, completing its path so that an electric current can pass through and produce sound?
a) conductivity
b) solubility
c) insulation
d) vibrations
Which of the following would result in a circuit not working correctly?
a) The light not being big enough
b) The wires not closed
c) More than one battery is present
d) A buzzer being used instead of a light bulb
Which of the objects below is NOT needed to test electrical conductivity?
a) Battery
b) Object powered by electricity
c) Insulated wire
d) Electrical tape
Which of the objects listed below can be connected to the end of wires to complete a circuit that makes a buzzer sound?
a) Another wire
b) battery
c) switch
d) lightbulb
After several attempts to turn on a light using a simple circuit, a student concludes that the circuit must be closed in order for the light to turn on. Is the student's conclusion reasonable?
a) No, because circuits cannon turn on lights.
b) No, because the circuit needs to remain open in order for it to work
c) Yes, because all conclusions are correct
d) Yes, because circuits must be closed in order for electricity to flow through them.
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