Electric Current Quiz

Electric Current Quiz

8th Grade

•

33 Qs

quiz-placeholder

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Electric Current Quiz

Electric Current Quiz

Assessment

Quiz

•

Science

•

8th Grade

•

Medium

•
NGSS
MS-PS2-3, MS-PS3-4, HS-PS2-5

+4

Standards-aligned

Created by

Scott Stoddart

Used 7+ times

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33 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The unit for the rate of current is the

ampere

volt

ohm

joule

Answer explanation

The unit for the rate of current is the ampere, which measures the flow of electric charge. The other options—volt, ohm, and joule—represent voltage, resistance, and energy, respectively, not current.

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

All electrical devices contain electric

acid

gears

circuits

motors

Answer explanation

All electrical devices contain circuits, which are essential for the flow of electricity. Unlike acid, gears, or motors, circuits are the fundamental components that enable electrical devices to function.

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Potential electric current can be converted into

heat

matter

waste

food

Answer explanation

Potential electric current primarily converts into heat due to resistance in conductors, which generates thermal energy. Other options like matter, waste, and food are not direct conversions of electric current.

Tags

NGSS.MS-PS3-4

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following does not determine the resistance of a wire?

temperature

diameter

length

color

Answer explanation

Color does not affect the resistance of a wire. Resistance is determined by temperature, diameter, and length, which influence how easily current can flow through the material.

5.

DROPDOWN QUESTION

3 mins • 1 pt

The amount of charge that passes through a wire in a given period of time is the rate of electric (a)   .

current

voltage

resistance

power

Answer explanation

The rate of electric current refers to the amount of charge that flows through a wire over time. Current is measured in amperes, making it the correct term to fill in the blank.

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The electrons in conductors move about ________________ freely than the electrons in insulators.

more

less

equally

Answer explanation

The correct answer is 'more' because electrons in conductors can move freely due to the presence of free charge carriers, while in insulators, electrons are tightly bound to their atoms and cannot move freely.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Charges flow through wires because of differences in electric _________________ .

current

field

potential

resistance

Answer explanation

Charges flow through wires due to differences in electric potential, which creates an electric field that drives the current. Thus, the correct answer is 'potential'.

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