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Coulomb’s Law

Total questions: 10

Worksheet time: 15mins

Name
Class
Date
1.

What happens to the electrostatic force between two charges when one of the charges is doubled?

a)

it stays the same

b)

it's cut in half

c)

it doubles

d)

it quadruples

2.

If the original force between two charges is 10N and you double both charges, what is the final magnitude of the force?

a)

40N

b)

4 N

c)

1/4N

d)

400N

3.

If the original force between two charges is 10N, and you triple one of the charges and double the distance between them, the magnitude of the force will be?

a)

30N

b)

5N

c)

7.5 N

d)

15N

4.

If the distance between two charges is reduced by half, what happens to the force?

a)

Quadruples (4x)

b)

Doubles (2x)

c)

Is quartered (1/4)

d)

Is halved (1/2)

5.

If the charge on the blue sphere is doubled and became negative , the electrostatic force between them would _________.

a)

It would increase in magnitude and continue to attract.

b)

It would decrease in magnitude and continue to attract.

c)

It would increase in magnitude and repel.

d)

It would decrease in magnitude and repel.

6.

Compared to protons, an electron has ________________.

a)

a smaller magnitude charge and the opposite sign

b)

the same magnitude charge and the same sign

c)

a larger magnitude charge and the same sign

d)

the same magnitude charge and opposite sign

7.

If the charge on one of the objects is tripled, what would happen to the force?

a)

It would triple in magnitude but remain in the same direction.

b)

It would be cut to 1/3rd in magnitude but remain in the same direction.

c)

It would triple in magnitude and reverse direction.

d)

It would be cut to 1/3rd in magnitude and reverse direction

8.

The two conductive spheres as shown in A are briefly touched together, charges flow between them, and then the spheres are separated. What is the charge on the right sphere after separation?

a)

0

b)

+2

c)

+4

d)

+8

9.

Which setup of charged particles shown below has the two exert the most force on one another?

a)
b)
c)
d)
10.

A point charge of +3.0 X 10-7 coulomb is placed 2.0 X 10-2 meter from a second point charge of +4.0 X 10-7 coulomb. What is the magnitude of the electrostatic force on the charges?

a)

6.0 X 10-12 N

b)

3.0 X 10-10 N

c)

5.4 X 10-2 N

d)

2.7 N