Question 1

Electrostatics is a branch of electricity that focuses on

Accepted Answer

A) electrical charge. 
B) electrical force. 
C) both of these when static. 
D) none of the above 
A) electrical charge. 
B) electrical force. 
C) both of these when static. 
D) none of the above C

Question 2

The electric field between oppositely-charged parallel plates is

Accepted Answer

A) uniform. 
B) stronger at the ends. 
C) composed of field lines in opposite directions. 
D) none of the above 
A) uniform. 
B) stronger at the ends. 
C) composed of field lines in opposite directions. 
D) none of the above A

Question 3

Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will be

Accepted Answer

A) F. 
B) 2 F. 
C) F/2. 
D) F/4. 
E) none of the above 
A) F. 
B) 2 F. 
C) F/2. 
D) F/4. 
E) none of the above C

Question 4

Which of these does NOT have an electrical charge?

Accepted Answer

A) proton 
B) electron 
C) neutron 
D) all of the above 
E) none of the above 
A) proton 
B) electron 
C) neutron 
D) all of the above 
E) none of the above

Question 5

To say that electric charge is conserved means that no case has ever been found where

Accepted Answer

A) the total charge on an object has changed. 
B) quantity of negative charge on an object exactly balances positive charge. 
C) the total quantity of charge on an object has increased. 
D) net charge has been created or destroyed. 
E) none of the above 
A) the total charge on an object has changed. 
B) quantity of negative charge on an object exactly balances positive charge. 
C) the total quantity of charge on an object has increased. 
D) net charge has been created or destroyed. 
E) none of the above

Question 6

A positively-charged rod is held near an aluminum can that rests on a dry wood table. If you momentarily touch the opposite side of the can with your finger, the can becomes

Accepted Answer

A) positively charged. 
B) negatively charged. 
C) partially discharged. 
D) completely discharged. 
E) none of the above 
A) positively charged. 
B) negatively charged. 
C) partially discharged. 
D) completely discharged. 
E) none of the above

Question 7

During a lightning strike you don't want to be inside a building framed with

Accepted Answer

A) steel. 
B) iron. 
C) aluminum. 
D) wood. 
A) steel. 
B) iron. 
C) aluminum. 
D) wood.

Question 8

The operation of a microwave oven makes use of

Accepted Answer

A) the polar nature of water molecules. 
B) flip flopping of polarized molecules. 
C) an oscillating electric field. 
D) all of the above 
E) none of the above 
A) the polar nature of water molecules. 
B) flip flopping of polarized molecules. 
C) an oscillating electric field. 
D) all of the above 
E) none of the above

Question 9

Electric shielding within a conductor is a consequence of

Accepted Answer

A) the balancing of opposing forces. 
B) both the attraction and repelling nature of electricity. 
C) cancellation of electric field lines. 
D) all of the above 
E) none of the above 
A) the balancing of opposing forces. 
B) both the attraction and repelling nature of electricity. 
C) cancellation of electric field lines. 
D) all of the above 
E) none of the above

Question 10

Two charged particles held close to each other are released. As they move, their speeds increase. Therefore, their charges have

Accepted Answer

A) the same sign. 
B) opposite signs. 
C) either of these 
D) need more information 
A) the same sign. 
B) opposite signs. 
C) either of these 
D) need more information

Question 11

Electric potential, measured in volts, is the ratio of electric energy to the amount of electric

Accepted Answer

A) current. 
B) resistance. 
C) charge. 
D) voltage. 
E) none of the above 
A) current. 
B) resistance. 
C) charge. 
D) voltage. 
E) none of the above

Question 12

Imagine a single charge q placed on one corner of a square, and that the electric field at the center of the square is F/q. If additional equal charges are placed on the other three corners, the electric field at the center of the square due to these four equal charges is

Accepted Answer

A) F/q. 
B) 4F/q. 
C) F/(2q). 
D) F/(4q). 
E) none of the above 
A) F/q. 
B) 4F/q. 
C) F/(2q). 
D) F/(4q). 
E) none of the above

Question 13

If you rub an inflated balloon against your hair and place the balloon against the wall it will stick to the wall, illustrating

Accepted Answer

A) Coulomb's law. 
B) conduction and insulation. 
C) charge polarization. 
D) voltage. 
A) Coulomb's law. 
B) conduction and insulation. 
C) charge polarization. 
D) voltage.

Question 14

Electrons can be transferred from one place to another by the process of

Accepted Answer

A) friction. 
B) contact, which means touching. 
C) induction, which means non-touching. 
D) all of the above 
E) none of the above 
A) friction. 
B) contact, which means touching. 
C) induction, which means non-touching. 
D) all of the above 
E) none of the above

Question 15

It is said that electric charge is quantized, which means that the charge on an object

Accepted Answer

A) may occur in an infinite variety of quantities. 
B) is a whole-number multiple of the charge of one electron. 
C) will interact with neighboring electric charges. 
D) can be neither created nor destroyed. 
E) is sometimes positive. 
A) may occur in an infinite variety of quantities. 
B) is a whole-number multiple of the charge of one electron. 
C) will interact with neighboring electric charges. 
D) can be neither created nor destroyed. 
E) is sometimes positive.

Question 16

The electric field inside an uncharged metal ball is zero. If the ball is negatively charged, the electric field inside the ball is then

Accepted Answer

A) less than zero. 
B) zero. 
C) greater than zero. 
A) less than zero. 
B) zero. 
C) greater than zero.

Question 17

A positive ion has more

Accepted Answer

A) electrons than neutrons. 
B) electrons than protons. 
C) protons than electrons. 
D) protons than neutrons. 
E) neutrons than protons. 
A) electrons than neutrons. 
B) electrons than protons. 
C) protons than electrons. 
D) protons than neutrons. 
E) neutrons than protons.

Question 18

Although the energy per coulomb of a high-voltage party balloon is high, the energy transfer that occurs if you touch it is low due to

Accepted Answer

A) the relatively small amount of charge. 
B) rubber being a poor conductor. 
C) the small electric potential. 
D) all of the above 
A) the relatively small amount of charge. 
B) rubber being a poor conductor. 
C) the small electric potential. 
D) all of the above

Question 19

Conducting materials are composed of atoms with

Accepted Answer

A) strong cohesive forces between them. 
B) loose outer electrons. 
C) excess neutrons compared with protons. 
D) vastly more charge than insulators. 
A) strong cohesive forces between them. 
B) loose outer electrons. 
C) excess neutrons compared with protons. 
D) vastly more charge than insulators.

Question 20

Two charges separated by one meter exert 1-N forces on each other. If the charges are pulled 3 meters apart, the force on each charge will be

Accepted Answer

A) 0.11 N. 
B) 0.33 N. 
C) 0 N. 
D) 3 N. 
E) 9 N. 
A) 0.11 N. 
B) 0.33 N. 
C) 0 N. 
D) 3 N. 
E) 9 N.

Exam 22: Electrostatics

Electrostatics is a branch of electricity that focuses on

The electric field between oppositely-charged parallel plates is

Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will be

Which of these does NOT have an electrical charge?

To say that electric charge is conserved means that no case has ever been found where

A positively-charged rod is held near an aluminum can that rests on a dry wood table. If you momentarily touch the opposite side of the can with your finger, the can becomes

During a lightning strike you don't want to be inside a building framed with

The operation of a microwave oven makes use of

Electric shielding within a conductor is a consequence of

Two charged particles held close to each other are released. As they move, their speeds increase. Therefore, their charges have

Electric potential, measured in volts, is the ratio of electric energy to the amount of electric

Imagine a single charge q placed on one corner of a square, and that the electric field at the center of the square is F/q. If additional equal charges are placed on the other three corners, the electric field at the center of the square due to these four equal charges is

If you rub an inflated balloon against your hair and place the balloon against the wall it will stick to the wall, illustrating

Electrons can be transferred from one place to another by the process of

It is said that electric charge is quantized, which means that the charge on an object

The electric field inside an uncharged metal ball is zero. If the ball is negatively charged, the electric field inside the ball is then

A positive ion has more

Although the energy per coulomb of a high-voltage party balloon is high, the energy transfer that occurs if you touch it is low due to

Conducting materials are composed of atoms with

Two charges separated by one meter exert 1-N forces on each other. If the charges are pulled 3 meters apart, the force on each charge will be

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