Grade 8: Electric Forces & Simple Circuits Quiz

What is the definition of an electric field?

• A type of energy produced by lightning

• The study of electric eels and their behavior

• The path that electricity follows through a circuit

• A force field that surrounds an electric charge and exerts force on other charges within the field.

Tags

NGSS.HS-PS3-5

How is the direction of an electric field determined?

• By the temperature of the field

• By the direction a positive test charge would move when placed in the field

• By the color of the object in the field

• By the number of electrons in the field

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NGSS.HS-PS3-5

What happens when two like charges interact?

• Create a neutral charge

• Attract

• Cause an explosion

• Repel

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NGSS.HS-PS3-5

What happens when two opposite charges interact?

• They repel each other

• They create a neutral charge

• They have no interaction

• They attract each other

Tags

NGSS.HS-PS2-4

In which direction does the electric force act on a positive charge?

• Toward the negative charge

• In a random direction

• Away from any charge

• Toward the positive charge

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NGSS.HS-PS2-4

How does the electric force between two charges change as the distance between them increases?

• Increases

• Decreases

• Stays the same

• Becomes zero

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NGSS.HS-PS2-4

What is the relationship between electric force and distance according to Coulomb's law?

• The relationship is that the electric force is inversely proportional to the distance.

• The relationship is that the electric force is inversely proportional to the square of the distance.

• The relationship is that the electric force is not affected by the distance.

• The relationship is that the electric force is directly proportional to the distance.

Tags

NGSS.HS-PS2-4

Explain the concept of electric potential in a simple circuit.

• Electric potential is the amount of electric potential energy per unit charge at a specific point in a circuit.

• Electric potential is the resistance of the circuit to the flow of electricity.

• Electric potential is the speed of electric current in a circuit.

• Electric potential is the brightness of the light bulbs in the circuit.

Tags

NGSS.HS-PS3-2

What is the difference between voltage and potential difference in a series circuit?

• They are the same

• Voltage is the electric potential energy per unit charge, while potential difference is the electric potential energy

• Voltage is measured in volts, while potential difference is measured in amperes

• Voltage is the energy per unit charge, while potential difference is the work done in moving a unit charge from one point to another

What is the definition of electric potential energy?

• The amount of potential energy per unit charge at a specific point in an electric field

• The brightness of the light bulbs in a circuit

• The resistance of the circuit to the flow of electricity

• The speed of electric current in a circuit

Tags

NGSS.HS-PS3-2