Question 1

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 these 
A)  100 ohms 
B)  60 ohms 
C)  1 ohm 
D)  144 ohms 
E)  none of these

Question 2

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

Question 3

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

Question 4

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

Question 5

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

Question 6

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 these 
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 these

Question 7

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. 
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.

Question 8

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

Question 9

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. 
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.

Question 10

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

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

Question 12

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. 
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.

Question 13

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

Question 14

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. 
A)  6 ohms. 
B)  6 watts. 
C)  6 joules. 
D)  6 newtons. 
E)  6 amperes.

Question 15

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

Question 16

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 these 
A)  more than the resistance of either lamp. 
B)  less than the resistance of either lamp. 
C)  none of these

Question 17

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

Question 18

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 lamp 
A)  thin filament. 
B)  thick filament. 
C)  the same in each lamp

Question 19

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. 
A)  less current. 
B)  more current. 
C)  the same current.

Question 20

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

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

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

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

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

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?

A conductor differs from an insulator in that a conductor

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

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

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

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

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

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

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

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

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

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

A circuit breaker often serves the same purpose as a

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

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

Every proton in the universe is surrounded by its own

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Exam 10: Static and Current Electricity

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

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

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

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

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?

A conductor differs from an insulator in that a conductor

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

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

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

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

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

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

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

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

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

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

A circuit breaker often serves the same purpose as a

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

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

Every proton in the universe is surrounded by its own

About Science

Atoms

Equilibrium and Linear Motion

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Temperature, Heat, and Thermodynamics

Heat Transfer and Change of Phase

Magnetism and Electromagnetic Induction

Waves and Sound

Light Waves

Properties of Light

Quantum Theory

The Atomic Nucleus and Radioactivity

Physics of Rotation and Equilibrium

Filters