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Electricity

Total questions: 23

Worksheet time: 13mins

Name
Class
Date
1.

The force that opposes and reduces the flow of electrical current is organized as ___

a)

Power

b)

Electromagnetism

c)

Resistance

d)

Frequency

2.

Which of the following is the best conductor of electricity?

a)

Copper

b)

Silver

c)

Aluminum

d)

Gold

3.
In a neutral atom, the number of electrons is equal to the number of _______.
a)
Neutrons
b)
Orbits
c)
Protons
d)
subatomic particles
4.
If two charges repel each other, the two charges must be
a)

positive and neutral

b)

positive and negative

c)

positive and neutral

d)

negative and negative

5.
An object becomes charged when the atoms in the object gain or lose
a)
electrons
b)
protons
c)
neutrons
d)
all of the above
6.
If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that
a)
friction destroyed electrons in the rod.
b)
the silk has become negatively charged.
c)
protons have moved to the rod.
d)
glass attracts more protons.
7.
If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged by
a)
friction.
b)
convection.
c)
induction.
d)
conduction.
8.
Objects that have opposite charges
a)
are attracted to each other, and the force between the objects pulls them together.
b)
are attracted to each other, and the force between the objects pushes them apart.
c)
are repelled by each other, and the force between the objects pulls them together.
d)
are repelled by each other, and the force between the objects pushes them apart.  
9.
Charging by ____ occurs when electrons are transferred from one object to another by direct contact.
a)
reduction
b)
induction
c)
conduction
d)
friction
10.

Which material is a conductor?

a)

glass

b)

wood

c)

steel

11.

Which material is an insulator?

a)

plastic

b)

gold

c)

copper

12.

Jill finds that all of the electric cords in her school are covered in plastic. Why is it important to cover the electric cords with plastic?

a)

Plastic is an insulator.

b)

Plastic is a conductor.

c)

Plastic is strong.

d)

Plastic will melt.

13.

Identify the image presented in the screen and it is the smallest unit of Matter.

(a)  

14.

Which of the following materials that is not a good electrical conductor?

a)
b)
c)
d)
15.

Which Law states that charges cannot be created nor destroyed, but can be transferred from one material to another.

a)

Law of Conversation of Charge

b)

Law of Conservation of Charge

c)

Law of Conservation of Change

d)

Law of Conservative of Change

16.

Electric charge is a property of matter that exists because of the excess or deficiency of electrons. What are the three types of Charging.

1. ________

2. ________

3. ________

(a)  

17.

Two unlike charges_________

a)

Attract each other

b)

Neutralize each other

c)

Repel each other

d)

Have no effect on each other

18.

It is created from the movement of electrons, which are tiny particles with a negative charge.

a)

Electricity

b)

heat

c)

light

d)

sound

19.

What is the type of circuit shown?

a)

Short circuit

b)

Parallel circuit

c)

Series circuit

d)

Electrical circuit

20.

What is the type of circuit shown?

a)

Short ciruit

b)

Electrical circuit

c)

Series Circuit

d)

Parallel circuit

21.

Two particles A and B have equal charges of -8.0 x 10^-6 C and initially separated from each other by 1.05 m.  Find the magnitude of the electric force between the two particles.

Is this a repulsive force or an attractive force?

(a)  

22.

A proton and an electron are separated by a distance of 3.8 x 10^-10 m in the air. Find the magnitude of the electric force the proton exerts on the electron. Is this force attractive or repulsive?

(a)  

23.

BONUS QUESTION:

What is the exact age of your General Physics 2 Teacher? ( Year, month, day)

(a)