Question 1

Every proton in the universe is surrounded by its own

Accepted Answer

A)   electric field and gravitational field.
B)   gravitational field.
C)   electric field
D)   None of the above choices are correct..E) None of the above
F) A) and B)

Question 2

A conductor differs from an insulator in that a conductor

Accepted Answer

A)   has faster moving molecules.
B)   has more energy than an insulator.
C)   has more protons than electrons.
D)   has more electrons than protons.
E)   none of theseF) D) and E)
G) All of the above

Question 3

What is the resistance of a 120-W incandescent lamp connected to a 120-V power supply?

Accepted Answer

A)   100 ohms
B)   60 ohms
C)   1 ohm
D)   144 ohms
E)   none of theseF) All of the above
G) A) and E)

Question 4

Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is

Accepted Answer

A)   actually more.
B)   the same.
C)   often less.
D)   definitely less.
E)   incredibly, all of these.F) A) and B)
G) C) and E)

Question 5

The power dissipated in a 4-ohm resistor carrying 3 A is

Accepted Answer

A)   48 W.
B)   36 W.
C)   7 W.
D)   18 W.
E)   not enough information to sayF) C) and E)
G) A) and C)

Question 6

A coulomb of charge that passes through a 6-volt battery is given

Accepted Answer

A)   6 ohms.
B)   6 watts.
C)   6 joules.
D)   6 newtons.
E)   6 amperes.F) None of the above
G) B) and E)

Question 7

When a 10-V battery is connected to a resistor, the current in the resistor is 2 A. What is the resistor's value?

Accepted Answer

A)   5 ohms
B)   20 ohms
C)   2 ohms
D)   10 ohms
E)   more than 20 ohmsF) D) and E)
G) B) and E)

Question 8

An electric heater is rated at 300 W when used in a 110-V circuit. The safety fuse in the circuit can handle 15 A of current. How many heaters can be safely operated in the circuit?

Accepted Answer

A)   5
B)   3
C)   4
D)   2
E)   more than 5F) B) and C)
G) D) and E)

Question 9

The electric field around an isolated electron has a certain strength 1 cm from the electron. The electric field strength 2 cm from the electron is

Accepted Answer

A)   four times as much.
B)   half as much.
C)   the same.
D)   twice as much.
E)   None of the above choices are correct.F) A) and E)
G) D) and E)

Question 10

To say that electric charge is quantized is to say that the charge on an object

Accepted Answer

A)   is sometimes positive.
B)   will interact with neighboring electric charges.
C)   may occur in an infinite variety of quantities.
D)   is a whole-number multiple of the charge of one electron.
E)   can be neither created nor destroyed.F) C) and D)
G) None of the above

Question 11

Two charged particles held close to each other are released. As the particles move, the velocity of each increases. Therefore, their charges have

Accepted Answer

A)   opposite signs.
B)   the same sign.
C)   either the same or opposite signs.
D)   impossible to answer without additional informationE) C) and D)
F) B) and C)

Question 12

Two lamps, one with a thick filament and one with a thin filament, are connected in series. The current is greater in the lamp with the

Accepted Answer

A)   thin filament.
B)   thick filament.
C)   the same in each lampD) B) and C)
E) A) and C)

Question 13

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

Accepted Answer

A)   net charge has been created or destroyed.
B)   total charge on an object has changed.
C)   total amount of charge on an object has increased.
D)   net amount of negative charges on an object is unbalanced by positive charge on another object.
E)   None of the above choices are correct.F) A) and E)
G) A) and D)

Question 14

Two lamps, one with a thick filament and one with a thin filament of the same material, are connected in parallel to a battery. The current is larger in the lamp with the

Accepted Answer

A)   thin filament.
B)   thick filament.
C)   Current is the same in both.D) B) and C)
E) A) and B)

Question 15

A circuit breaker often serves the same purpose as a

Accepted Answer

A)   capacitor.
B)   fuse.
C)   battery
D)   All of the above choices are correct.
E)   None of the above choices are correct.F) A) and E)
G) A) and C)

Question 16

A main difference between gravitational and electric forces is that electrical forces

Accepted Answer

A)   act over shorter distances.
B)   obey the inverse-square law.
C)   repel or attract.
D)   attract.
E)   are weaker.F) A) and D)
G) C) and D)

Question 17

Compared to a single lamp connected to a battery, two identical lamps connected in series to the same battery will carry

Accepted Answer

A)   less current.
B)   more current.
C)   the same current.D) None of the above
E) A) and B)

Question 18

When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is

Accepted Answer

A)   more than the resistance of either lamp.
B)   less than the resistance of either lamp.
C)   none of theseD) A) and B)
E) A) and C)

Question 19

To say that electric charge is conserved is to say that electric charge

Accepted Answer

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

Question 20

Two charges separated by one meter exert 1-N forces on each other. If the magnitude of each charge is doubled, the force on each charge is

Accepted Answer

A)   4 N.
B)   8 N.
C)   2 N.
D)   1 N.
E)   None of the above choices are correct.F) C) and E)
G) A) and C)

Exam 10: Static and Current Electricity

Two charges separated by one meter exert 1-N forces on each other. If the magnitude of each charge is doubled, the force on each charge is

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A coulomb of charge that passes through a 6-volt battery is given

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When a 10-V battery is connected to a resistor, the current in the resistor is 2 A. What is the resistor's value?

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Two lamps, one with a thick filament and one with a thin filament, are connected in series. The current is greater in the lamp with the

Correct AnswerverifiedShow Answer

Compared to a single lamp connected to a battery, two identical lamps connected in series to the same battery will carry

Correct AnswerverifiedShow Answer

To say that electric charge is quantized is to say that the charge on an object

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Two lamps, one with a thick filament and one with a thin filament of the same material, are connected in parallel to a battery. The current is larger in the lamp with the

Correct AnswerverifiedShow Answer

The electric field around an isolated electron has a certain strength 1 cm from the electron. The electric field strength 2 cm from the electron is

Correct AnswerverifiedShow Answer

A circuit breaker often serves the same purpose as a

Correct AnswerverifiedShow Answer

Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is

Correct AnswerverifiedShow Answer

The power dissipated in a 4-ohm resistor carrying 3 A is

Correct AnswerverifiedShow Answer

A conductor differs from an insulator in that a conductor

Correct AnswerverifiedShow Answer

An electric heater is rated at 300 W when used in a 110-V circuit. The safety fuse in the circuit can handle 15 A of current. How many heaters can be safely operated in the circuit?

Correct AnswerverifiedShow Answer

A main difference between gravitational and electric forces is that electrical forces

Correct AnswerverifiedShow Answer

Every proton in the universe is surrounded by its own

Correct AnswerverifiedShow Answer

To say that electric charge is conserved is to say that electric charge

Correct AnswerverifiedShow Answer

When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is

Correct AnswerverifiedShow Answer

Two charged particles held close to each other are released. As the particles move, the velocity of each increases. Therefore, their charges have

Correct AnswerverifiedShow Answer

What is the resistance of a 120-W incandescent lamp connected to a 120-V power supply?

Correct AnswerverifiedShow Answer

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