Unit 8: Electrostatics, Electric Fields and Potential H Online Multiple Choice

If you walk into a region of space and suddenly feel a force, the space is said to contain a

• charged object

• force field

• large charge

• black hole

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An electric field has

• direction

• magnitude

• Both A and B

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Every proton in the universe is surrounded by its own

• gravitational field

• electric field

• both A and B

• none of the above

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The direction of electric field lines shows the

• direction of the force on a test positive charge.

• size of the field.

• strength of the field.

• all of the above

Suppose a hollow metal sphere has a large negative charge on it. The electric field strength inside the sphere is

• large and positive.

• zero.

• large and negative.

• weak and positive.

Suppose you touch a negatively charged object to a metal sphere so that electrons move from the charged object onto the sphere. After the charged object is moved far away, electrons on the sphere will be

• distributed in small bunches over the sphere's surface.

• distributed evenly over the sphere's surface.

• pulled off the sphere along with the charged object.

• located at the place where the charged object was.

• all of the above

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Electrical potential energy is the energy a charged object has because of its

• momentum

• location

• mass

• motion

• volume

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A small, positively charged object near a positively charged sphere is moved closer to the sphere. The electrical potential energy of the small object

• stays the same.

• decreases

• increases

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If two negative charges are held close together and then released, the charges will

• accelerate toward each other.

• accelerate away from each other.

• not move

• move at a constant speed away from each other.

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Electric potential is defined as

• electrical potential energy of a charge multiplied by the quantity of the charge.

• electrical potential energy of a charge divided by the quantity of the charge.

• electrical potential energy.

• gravitational potential.

• voltage.