Free Printable Electrostatics

1.

An instrument used to detect the presence of a static charge is the (a) .

2.

Three rods of different materials P, Q, and R, are charged by various methods. When the rods are brought near each other, the rods P and Q repel each other, while the rods P and R attract each other. Which of the following would be the signs of the charges on the rods?

a)

Rod P Rod Q Rod R

negative positive negative

b)

Rod P Rod Q Rod R

positive positive negative

c)

Rod P Rod Q Rod R

negative negative positive

3.

When two bodies are charged, the total charge before and after charging remains the same because of ___.

a)

quantization of charges

b)

law of induction

c)

Coulomb’s law

d)

Conservation of Charges

4.

_____ force between charges is enormous in comparison to _____ force.

a)

Electrostatic, Gravitational

b)

Gravitational, Electrostatic

c)

Positive, Negative

d)

Negative, Positive

5.

Most static electricity is produced by

(a)

6.

What does the "static" mean in static electricity?

(a)

7.

Oppositely charged objects (a) each other.

8.

A material through which electrons do not move easily is called a(n)

(a)

9.

lightning is ____________

a)

a very large discharge of static electricity

b)

a buildup of neutrons

c)

a low voltage electric current

d)

harmless

10.

Which of the following statements is true about electrostatic forces?

a)

They only occur between charged objects.

b)

They are always attractive.

c)

They are independent of the distance between objects.

d)

They only occur in a vacuum.

11.

A proton and an electron are placed 1 meter apart. Which of the following statements is true about the forces they exert on each other?

a)

The gravitational force is stronger than the electrostatic force.

b)

The electrostatic force is stronger than the gravitational force.

c)

Both forces are equal in magnitude.

d)

There is no force between them.

12.

Using Coulomb's Law, calculate the electrostatic force between two charges of $+3 \mu C$ and $-3 \mu C$ separated by a distance of 0.5 meters. Use $k = 8.99 \times 10^9 \, \text{Nm}^2/\text{C}^2$ .

a)

$3.24 \times 10^{-2} \, \text{N}$

b)

$1.62 \times 10^{-2} \, \text{N}$

c)

$5.39 \times 10^{-2} \, \text{N}$

d)

$4.05 \times 10^{-2} \, \text{N}$

13.

Which of the following materials is a good conductor of electricity?

a)

A) Rubber

b)

B) Glass

c)

C) Copper

d)

D) Wood

14.

What happens to the force between two charges if the distance between them is doubled?

a)

A) The force doubles

b)

B) The force is halved

c)

C) The force is quartered

d)

D) The force remains the same

15.

Which of the following is a real-world application of electrostatics?

a)

A) Electric motor

b)

B) Lightning rod

c)

C) Solar panel

d)

D) Wind turbine

Electrostatics

Total questions: 15

Worksheet time: 15mins

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