RAD 121 Electricity notes Exam Practice

RAD 121: Electricity notes
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1. Which of the following is the branch of A. Electrostatics
physics dealing with stationary or resting
electric charges?
A. Electrostatics
B. Ionization
C. Electrification
D. Static electricity

2. A resting charge is ___________. D. Static electricity
A. Electrostatics
B. Ionization
C. Electrification
D. Static electricity

3. Which of the following is adding/subtracting B. Ionization
electrons from an atom?
A. Electrostatics
B. Ionization
C. Electrification
D. Static electricity

4. Which of the following is adding/subtracting C. Electrification
electrons from an object of matter?
A. Electrostatics
B. Ionization
C. Electrification
D. Static electricity

5. True or False: False
There are 3 kinds of charges; positive, nega- 2; Positive and negative
tive, and neutral.

6. When electrons are lost, matter becomes A. Positive cation
______.
A. Positive
B. Negative
C. Neutral

7. B. Negative



, RAD 121: Electricity notes
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When electrons are added, matter becomes
______.
A. Positive
B. Negative
C. Neutral

8. A cation has a ______ charge. A. Positive
A. Positive
B. Negative
C. Neutral

9. An anion has a ______ charge. B. Negative
A. Positive
B. Negative
C. Neutral

10. Which of the following is NOT a unit of elec- B. Amps
trical charge?
A. Air Kerma
B. Amps
C. Coulomb
D. All of the above are units of electrical
charge

11. True or False: False
There are 3 kinds of electricity. 2

12. What kind of electricity is a stationary Static electricity
charge?

13. What kind of electricity are charges in mo- Current
tion?

14. Which of the following is another term for C. Electrostatics
static electricity?
A. Electrodynamics
B. Induction
C. Electrostatics
D. Friction



, RAD 121: Electricity notes
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15. Which of the following is another term for A. Electrodynamics
current?
A. Electrodynamics
B. Induction
C. Electrostatics
D. Friction

16. True or False: True
There are 3 methods of electrification.

17. Which of the following is NOT a method of A. Ionization
electrification?
A. Ionization
B. Contact
C. Induction
D. Friction

18. Which method of electrification is being de- Contact
scribed?
A charged object which is negative touches
a neutral object and presents the same nega-
tive charge on the neutral object.

19. True or False: True
If an object has a positive charge, it will re-
move electrons from a neutral object on con-
tact.

20. True or False: False
If an object has a positive charge, it will give Negative object gives up to
up electrons to a neutral object on contact. neutral

21. Which method of electrification is being de- Friction
scribed?
Walking over a carpet and touching a metal
object, causing a spark.

22. Which method of electrification is being de- Friction
scribed?



, RAD 121: Electricity notes
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Combing your hair and hearing a crackling
sound from a spark.

23. Which of the following is a buildup of elec- C. Friction
trons caused by rubbing two objects togeth-
er?
A. Electrostatics
B. Contact
C. Friction
D. Induction

24. True or False: True
There are two ways electrification by friction
occurs.

25. One way electrification by friction occurs is A. Positive
the removal of electrons from one object mak-
ing it _______.
A. Positive
B. Negative
C. Neutral
D. This is not a way friction causes electricity

26. One way electrification by friction occurs is B. Negative
the addition of electrons to an object making
it _______.
A. Positive
B. Negative
C. Neutral
D. This is not a way friction causes electricity

27. What are the two ways friction causes electri- Positive and negative elec-
fication? trification

28. Which type of electrification by friction is be- Positive electrification
ing described?
A glass rod is rubbed with silk and some
electrons are removed.

29. Negative electrification