Static Electricity - Assessment

1.

Multiple Choice

1 min

1 pt

You are walking on a rug and gain a positive charge. When you touch a neutral doorknob

Protons flow from your hand to the doorknob, and you get a shock

Electrons flow from your hand to the doorknob, and you get a shock

Electrons flow from the doorknob to your hand, giving you a shock

No charges flow but you still get a shock

2.

Multiple Choice

45 sec

1 pt

A stationary negative charge in an electric field experiences an electric force in the direction

shown.

What is the direction of the electric field?

to the left

to the right

down the page

up the page

3.

Multiple Choice

1 min

1 pt

Which of the diagrams shows the correct electric field pattern for oppositely charged parallel plates?

A

B

C

D

4.

Multiple Choice

45 sec

1 pt

An aircraft flying through the air becomes electrically charged.

What causes this to happen?

radio waves emitted by the aircraft

friction of the aircraft with the air

heating of the aircraft surface

background radiation in the aircraft

5.

Multiple Choice

1 min

1 pt

A negatively-charged rod is brought close to an isolated T-shaped piece of metal.

Initially, the metal is uncharged.

Which diagram shows the induced charge on the metal?

A

B

C

D

6.

Multiple Choice

45 sec

1 pt

Two charged conducting spheres are placed close to one another. One sphere is positively charged and the other is negatively charged. Which diagram shows the distribution of charges and the forces acting on the spheres?

A

B

C

D

7.

Multiple Choice

30 sec

1 pt

Which list contains only electrical insulators?

glass, plastic, rubber

glass, plastic, steel

glass, rubber, steel

plastic, rubber, steel

8.

Multiple Choice

45 sec

1 pt

What is the definition of an electric field?

A region in space in which a mass experiences a force due to earth's gravitational pull

A region in space through which electromagnetic radiation passes

A region in space in which a compass needle experiences a force

A region in space in which an electric charge experiences a force

9.

Multiple Choice

45 sec

1 pt

Which of the following statements about an electrical insulator is correct?

a.

b.

c.

d.

it contains some electrons but more protons

it contains some protons but more electrons

it contains electrons but they are not free to move

it contains no electrons at all

10.

Multiple Choice

1 min

1 pt

A negatively charged strip is brought near to (but not touching) an uncharged conductor. If the conductor is earthed it

becomes negatively charged

becomes negatively charged on one side and positively charged on the other

is attracted by the strip

is repelled by the strip

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