Sphere A carries a net charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?

There is a force of attraction between them.

There is no force between them since one is neutral.

There is a force of repulsion between them.

The force is attractive if A is charged positively and repulsive if A is charged negatively.

MULTICORRECT (Choose 2): As shown on the right, a positively charged sphere, Q 1 = 3Q is separated from a negatively charged sphere, Q 2 = -10Q by a distance r. The spheres briefly touch each other and move to the original distance r. Which of the following is true about the new charge on the spheres and the new force between the spheres?

The new charge on each sphere is –3.5Q.

The new force between the spheres is repulsive

The new charge on each sphere is 6.5Q.

The new force between the spheres is attractive

If you rub a balloon with a piece of wool cloth, the balloon will:

Have no interaction with the wool cloth

Not enough information is given to determine what will happen

Ms. Josette rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

The balloons will repel each other

The balloons will attract each other.

The balloon will become colorless.

If an object becomes negative, what will be attracted to it?

it will not attract any charges

Consider the conduction charging shown.

Electrons move from the charged metal bar into the sphere.

Electrons move from the insulating stand into the sphere.

Protons move from the bar into the sphere.

Protons move from the sphere into the negatively charged bar.

When a rod is brought near a neutral electroscope, the leaves diverge. Which statement best describes the charge on the rod?

It may be positive or negative.

Two electrically neutral metal spheres, A and B, on insulating stands are placed in contact with each other. A negatively charged rod is brought near, but does not touch the spheres, as shown in the diagram below. How are the spheres now charged?

A is positive and B is negative.

A is positive and B is positive.

A is negative and B is positive.

A is negative and B is negative.

Conservation of Charge, charging methods

Authored by Kristian Hernandez

Physics

10th Grade

NGSS covered

Used 6+ times

Conservation of Charge, charging methods

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31 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What types of charges repel?

Positive and Positive

Positive and Neutral

Negative and Neutral

Neutral and Neutral

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

A positive charge.

A negative charge.

A neutral charge

No charge at all

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The closer the charges, the ___________ the force between them

closer

further

stronger

weaker

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A balloon has a negative charge. The glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?

The balloon will be attracted to the rod

The balloon will be repelled by the rod

The balloon will remain in place

The balloon will spin in circles

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is NOT an insulator.

Wool

Plastic

Copper

Glass

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the difference between a conductor and an insulator?

An insulator allows electricity to flow through it easily and a conductor does not

A conductor allows electricity to flow through it easily and an insulator does not.

An insulator is magnetic and a conductor is not

A conductor is magnetic and an insulator is not

Tags

NGSS.HS-PS3-5

NGSS.HS-PS1-3

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The electrical wires in many homes are made of copper and covered with plastic. Why are copper and plastic good choices for electrical wires?

Copper is a conductor of electricity, and plastic is an insulator of electricity.

Copper is an insulator of electricity, and plastic is a conductor of electricity.

Copper is a conductor of electricity, and plastic is an insulator of heat.

Copper is an insulator of electricity, and plastic is a conductor of heat.

Tags

NGSS.HS-PS2-6

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Conservation of Charge, charging methods

What types of charges repel?

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

The closer the charges, the ___________ the force between them

A balloon has a negative charge. The glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?

Which is NOT an insulator.

What is the difference between a conductor and an insulator?

The electrical wires in many homes are made of copper and covered with plastic. Why are copper and plastic good choices for electrical wires?

Rubbing a balloon on hair is an example of static charge build up created by....

What subatomic particles would you find in the nucleus of an atom?

Electric charges that are different _______ each other.

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