Electric Charges and Coulomb's Law

In a neutral atom, there are more of which charge?

• there are more positive charges

• there are more negative charges

• there are equal amounts of both charges

• there are no charges in a neutral atom

Coulomb's Law is similar to which of these?

• Newton's Second Law of Motion

• Newton's Law of Universal Gravitation

• Ohm's Law

• Kepler's Laws of Planetary Motion

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NGSS.HS-PS2-4

The Law of Conservation of Charge states that

• charges can be created or destroyed but never transferred

• charges cannot be created or destroyed but also cannot be transferred

• charges can be created or destroyed and transferred

• charges cannot be created or destroyed only transferred

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NGSS.HS-PS3-5

Electric charges exert which kind of force?

• a field force

• a contact force

• a gravitational force

• a frictional force

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Which is stronger, the electric force between two charges or the gravitational force between the same two charges?

• the gravitational force is 39 times stronger than the electric force

• the electric force is 39 times stronger than the gravitational force

• the gravitational force is 10³⁹ times stronger than the electric force

• the electric force is 10³⁹ times stronger than the gravitational force

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True or false: the electric force can overcome the force of gravity and hold things up above the ground

• true

• false

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NGSS.HS-PS3-5

In an atom, what are the negative charges called and where are they found

• neutrons are found in the nucleus

• electrons are found in the nucleus

• neutrons are found outside the nucleus

• electrons are found outside the nucleus

In an atom, what are the positive charges called and where are they found?

• positrons are found in the nucleus

• protons are found in the nucleus

• positrons are found outside the nucleus

• protons are found outside the nucleus

According to Coulomb's Law, the amount of electric force depends on which two things?

• the charge on each of the two particles and the distance between them

• the charge on each of the two particles and the gravitational force between them

• the mass of each of the particles and the distance between them

• the mass of each of the particles and the gravitational force between them

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NGSS.HS-PS2-4

In which way do electric fields interact? (select all that apply)

• like charges attract

• like charges repel

• unlike charges attract

• unlike charges repel