AnswersFall 24 GSE Physical Science B ICElectric Charge

Electric Current Answers

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Measurements of two electric currents are shown in the chart.

Question illustration
A
Current X has a greater potential difference, and the charges flow at a slower rate.
B
Current Y has a greater potential difference, and the charges flow at a slower rate.
C
Current X has a greater potential difference, and the charges flow at a faster rate.
D
Current Y has a greater potential difference, and the charges flow at a faster rate.
2
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Which lists types of materials from most conductive to least conductive?

A
insulator, semiconductor, conductor, superconductor
B
superconductor, conductor, semiconductor, insulator
C
conductor, insulator, semiconductor, superconductor
D
semiconductor, conductor, superconductor, insulator
3

Which most likely has the greatest conductivity?

A
a warm plastic rod
B
a cool rubber tube
C
a cool silver strip
D
a warm copper wire
4

In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery.

Question illustration
A
a balance in electric potential
B
a balance in resistance
C
a difference in electric potential
D
a difference in resistance
5

What would decrease the resistance of wires carrying an electric current?

A
shorter wires
B
higher-temperature wires
C
darker-colored wires
D
thinner wires
6

Electric current is the flow of charged particles called ________

A
protons.
B
electrons.
C
sparks.
D
static.
7

Resistance depends on which three properties of a wire?Color and texture are not directly related to a wire’s resistance.

A
color, thickness, texture
B
thickness, length, temperature
C
length, texture, temperature
D
temperature, color, texture
8

Look at the diagram showing resistance and flow of electrons.

Question illustration
A
X: High resistanceY: Low resistanceZ: Flow of electrons
B
X: Low resistanceY: Flow of electronsZ: High resistance
C
X: Flow of electronsY: High potential energyZ: Low potential energy
D
X: Low potential energyY: High potential energyZ: Flow of electrons
9

Jodi made a list about electric current to help her study for a test.1) Movement of electrons is continuous in a current.2) Electrons move from areas of low to high electric potential.3) Voltage causes current to flow.4) Rate at which current flows is measured in amperes.

A
The movement of electrons is not always continuous.
B
Electrons move from areas of high to low electric potential.
C
Resistance causes current to flow.
D
The rate at which current flows is measured in ohms.
10

Superconducting magnets are used in machines called particle accelerators. These machines rely on zero resistance in order to function properly.

A
They are heated to extremely high temperatures.
B
They are cooled to extremely low temperatures.
C
They are made to be very thick.
D
They are made to be very thin.

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