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Understanding Electricity and Motion

Authored by Emily Hoysted

Science

10th Grade

Understanding Electricity and Motion
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary difference between alternating current (AC) and direct current (DC)?

AC flows in one direction, while DC changes direction periodically.

AC changes direction periodically, while DC flows in one direction.

AC is generated by batteries, while DC is generated by turbines.

AC is used in small electronic devices, while DC is used in power grids.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which component is used to store electrical energy in a circuit?

Resistor

Capacitor

Inductor

Diode

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of electric current?

Volt

Ohm

Ampere

Watt

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a renewable source of energy for generating electricity?

Coal

Natural Gas

Nuclear

Wind

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Newton's second law of motion, what is the formula for force?

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of a diode in an electrical circuit?

To store energy

To allow current to flow in one direction only

To increase voltage

To decrease resistance

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following devices converts sunlight directly into electricity?

Wind turbine

Photovoltaic cell

Hydroelectric dam

Nuclear reactor

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