AnswersNC-Physical Science CR 2024Unit Test

Electric Circuits Answers

9 verified answers
1
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Which statement describes one feature of a closed circuit?

A
Charges do not flow.
B
Bulbs will not shine.
C
The circuit is broken.
D
The circuit is complete.
2
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Patty makes a table of the symbols used for the parts of an electric circuit.

Question illustration
A
Battery
B
Switch
C
Resistor
D
Bulb
3

A large cooler is filled with water, as shown below.

Question illustration
A
Opening the valve allows water to flow, just like opening a switch allows charges to flow.
B
Opening the valve stops the flow of water, but closing a switch stops the flow of charges.
C
Closing the valve stops the flow of water, but opening a switch stops the flow of charges.
D
Closing the valve allows water to flow, just like closing a switch allows charges to flow.
4

Chang wants to build a circuit that will light up a bulb from a flashlight, and has a battery, switch, wire, and a light bulb.Which component would Chang use as the source of energy?

A
the battery
B
the switch
C
the wire
D
the light bulb
5

What symbol would best represent an electric fan speed controller in an electric circuit?

A
Option
B
Option
C
Option
D
Option
6

Look at the circuit diagram.

Question illustration
A
one battery, two light bulbs, and three resistors
B
one battery, two switches, and three light bulbs
C
one switch, one resistor, and three light bulbs
D
one switch, one light bulb, and three batteries
7

Which statement describes an open circuit?

A
The circuit is incomplete and broken, and the lights in the circuit shine.
B
The circuit is complete and unbroken, and the lights in the circuit shine.
C
The circuit is incomplete and broken, and the lights in the circuit do not shine.
D
The circuit is complete and unbroken, and the lights in the circuit do not shine.
8

How do the lights in a series circuit behave when one bulb burns out?

A
The rest of the bulbs continue to shine at maximum brightness.
B
The rest of the bulbs continue to shine at a lower brightness.
C
The rest of the bulbs continue to shine at a higher brightness.
D
The rest of the bulbs stop shining and shut off.
9

Which device provides electrical energy to run an electric circuit?

A
the wire
B
the switch
C
the battery
D
the light bulb
10

When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in this circuit?

A
The electric charges move from the energy source and are used up at the switch.
B
The electric charges move from the energy source and are used up at the buzzer.
C
The electric charges move from the buzzer through the energy source and back to the buzzer.
D
The electric charges move from the energy source through the buzzer and back to the energy source.

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Electric Circuits Answers — NC-Physical Science…