Question 1

A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms.The voltage of the battery is

Accepted Answer

A) 0.5 volts. 
B) 2 volts. 
C) 8 volts. 
D) none of the above. 
A) 0.5 volts. 
B) 2 volts. 
C) 8 volts. 
D) none of the above.

Question 2

Current is the rate of flow of electric charge.

Accepted Answer

A) True 
 B)False

Question 3

A heater is rated at 1200 watts for a 120-volt source.
-If two heaters are connected in parallel across the 120-volt source,the current drawn from the source is 10 amperes.

Accepted Answer

A) True 
 B)False

Question 4

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.
-If two slide projectors are connected in series across the same 120-volt source,the current drawn from the source is __________.

Accepted Answer

The answer of A light bulb used in a slide...

Question 5

A heater is rated at 1200 watts for a 120-volt source.
-The resistance of the heater is 10 ohms.

Accepted Answer

A) True 
 B)False

Question 6

Electrons are

Accepted Answer

A) positively charged. 
B) negatively charged. 
C) uncharged. 
D) variably charged. 
A) positively charged. 
B) negatively charged. 
C) uncharged. 
D) variably charged.

Question 7

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.
-If two slide projectors are connected in series across the same 120-volt source,the current drawn from the source in amperes is

Accepted Answer

A) 3. 
B) 6. 
C) 9. 
D) 12. 
E) none of the above. 
A) 3. 
B) 6. 
C) 9. 
D) 12. 
E) none of the above.

Question 8

The light bulb used in a lamp has a resistance of 240 ohms when operating on 120 volts.What is the bulb's power consumption?

Accepted Answer

The answer of The light bulb used in a lamp...

Question 9

Two charged bodies separated by a distance d exert an electrical force on each other.The charge on one of the bodies is doubled.The electrical forces on each body now

Accepted Answer

A) double. 
B) decrease by 1/2. 
C) stay the same. 
D) differ-the force on the other body doubles,but the force on the body whose charge was changed stays the same as before. 
E) increase by a factor of four. 
A) double. 
B) decrease by 1/2. 
C) stay the same. 
D) differ-the force on the other body doubles,but the force on the body whose charge was changed stays the same as before. 
E) increase by a factor of four.

Question 10

Voltage can also be called

Accepted Answer

A) potential. 
B) pressure. 
C) work. 
D) energy. 
E) none of the above. 
A) potential. 
B) pressure. 
C) work. 
D) energy. 
E) none of the above.

Question 11

An electric motor on an airplane operates on 21.5 volts and draws a current of 11.0 amperes.How much energy (in joules)does the motor use during a 9.0-hour flight?

Accepted Answer

A) 1064.4 
B) 2128.5 
C) 127710.0 
D) 7662600.0 
A) 1064.4 
B) 2128.5 
C) 127710.0 
D) 7662600.0

Question 12

If the temperature of a wire increases,its resistance

Accepted Answer

A) increases. 
B) decreases. 
C) does not change. 
D) will increase or decrease depending on the composition. 
E) will change in a way that can not be determined. 
A) increases. 
B) decreases. 
C) does not change. 
D) will increase or decrease depending on the composition. 
E) will change in a way that can not be determined.

Question 13

A positive ion is formed when

Accepted Answer

A) a neutral atom gains an electron. 
B) a neutral atom loses an electron. 
C) a negative ion loses an electron. 
D) all of the above 
A) a neutral atom gains an electron. 
B) a neutral atom loses an electron. 
C) a negative ion loses an electron. 
D) all of the above

Question 14

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.
-If two slide projectors are connected in parallel across the same 120-volt source,the current drawn from the source is __________.

Accepted Answer

The answer of A light bulb used in a slide...

Question 15

The SI unit of electric charge is

Accepted Answer

A) e,the charge on the electron. 
B) the coulomb. 
C) the ampere. 
D) the ohm. 
E) the volt. 
A) e,the charge on the electron. 
B) the coulomb. 
C) the ampere. 
D) the ohm. 
E) the volt.

Question 16

The electric field shown is produced by a single point charge at the center of the picture.  
-What force might a charge placed at location D feel?

Accepted Answer

A) zero 
B) an upward force 
C) a downward force 
D) a force to the right 
E) a force to the left 
A) zero 
B) an upward force 
C) a downward force 
D) a force to the right 
E) a force to the left

Question 17

​Match each item with the correct statement below.
-this phenomenon results in a loss of usable energy

Accepted Answer

A) ​AC 
B) ​attract 
C) ​critical temperature 
D) ​electric current 
E) ​DC
F)​electric field
G)​negative ion
H)​positive ion
I)​repel
J)​resistance
K)​semiconductor
L)​transformer
M)​superconductor
N)​voltage
O)​electric charge
P)​ohmic heating 
A) ​AC 
B) ​attract 
C) ​critical temperature 
D) ​electric current 
E) ​DC
F)​electric field
G)​negative ion
H)​positive ion
I)​repel
J)​resistance
K)​semiconductor
L)​transformer
M)​superconductor
N)​voltage
O)​electric charge
P)​ohmic heating

Question 18

The kilowatt-hour is a unit of

Accepted Answer

A) power. 
B) energy. 
C) voltage. 
D) current. 
A) power. 
B) energy. 
C) voltage. 
D) current.

Question 19

Two charged bodies separated by a distance d exert an electrical force on each other.The distance d is doubled.The electrical force on each body is now __________ times the original force.

Accepted Answer

The answer of Two charged bodies separated by a distance...

Question 20

If the diameter of a wire increases,its resistance

Accepted Answer

A) increases. 
B) decreases. 
C) does not change. 
D) will increase or decrease depending on the composition. 
E) will change in a way that can not be determined. 
A) increases. 
B) decreases. 
C) does not change. 
D) will increase or decrease depending on the composition. 
E) will change in a way that can not be determined.

A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms.The voltage of the battery is

Current is the rate of flow of electric charge.

A heater is rated at 1200 watts for a 120-volt source. -If two heaters are connected in parallel across the 120-volt source,the current drawn from the source is 10 amperes.

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -If two slide projectors are connected in series across the same 120-volt source,the current drawn from the source is __________.

A heater is rated at 1200 watts for a 120-volt source. -The resistance of the heater is 10 ohms.

Electrons are

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -If two slide projectors are connected in series across the same 120-volt source,the current drawn from the source in amperes is

The light bulb used in a lamp has a resistance of 240 ohms when operating on 120 volts.What is the bulb's power consumption?

Two charged bodies separated by a distance d exert an electrical force on each other.The charge on one of the bodies is doubled.The electrical forces on each body now

Voltage can also be called

An electric motor on an airplane operates on 21.5 volts and draws a current of 11.0 amperes.How much energy (in joules)does the motor use during a 9.0-hour flight?

If the temperature of a wire increases,its resistance

A positive ion is formed when

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -If two slide projectors are connected in parallel across the same 120-volt source,the current drawn from the source is __________.

The SI unit of electric charge is

The electric field shown is produced by a single point charge at the center of the picture. -What force might a charge placed at location D feel?

Match each item with the correct statement below. -this phenomenon results in a loss of usable energy

The kilowatt-hour is a unit of

Two charged bodies separated by a distance d exert an electrical force on each other.The distance d is doubled.The electrical force on each body is now __________ times the original force.

If the diameter of a wire increases,its resistance

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Exam 7: Electricity

A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms.The voltage of the battery is

Current is the rate of flow of electric charge.

A heater is rated at 1200 watts for a 120-volt source. -If two heaters are connected in parallel across the 120-volt source,the current drawn from the source is 10 amperes.

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -If two slide projectors are connected in series across the same 120-volt source,the current drawn from the source is __________.

A heater is rated at 1200 watts for a 120-volt source. -The resistance of the heater is 10 ohms.

Electrons are

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -If two slide projectors are connected in series across the same 120-volt source,the current drawn from the source in amperes is

The light bulb used in a lamp has a resistance of 240 ohms when operating on 120 volts.What is the bulb's power consumption?

Two charged bodies separated by a distance d exert an electrical force on each other.The charge on one of the bodies is doubled.The electrical forces on each body now

Voltage can also be called

An electric motor on an airplane operates on 21.5 volts and draws a current of 11.0 amperes.How much energy (in joules)does the motor use during a 9.0-hour flight?

If the temperature of a wire increases,its resistance

A positive ion is formed when

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -If two slide projectors are connected in parallel across the same 120-volt source,the current drawn from the source is __________.

The SI unit of electric charge is

The electric field shown is produced by a single point charge at the center of the picture. -What force might a charge placed at location D feel?

​Match each item with the correct statement below. -this phenomenon results in a loss of usable energy

The kilowatt-hour is a unit of

Two charged bodies separated by a distance d exert an electrical force on each other.The distance d is doubled.The electrical force on each body is now __________ times the original force.

If the diameter of a wire increases,its resistance

The Study of Motion

Newtons Laws

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electromagnetism and Em Waves

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Match each item with the correct statement below. -this phenomenon results in a loss of usable energy