Question 1

If you have 7 total 100-W light bulbs in a parallel circuit in your basement and you leave them on for 1.5 days,how much energy (in kilowatt hours)would be used?

Accepted Answer

A) 25.2 kWh 
B) 1050 kWh 
C) 3520 kWh 
D) 25200kWh 
A) 25.2 kWh 
B) 1050 kWh 
C) 3520 kWh 
D) 25200kWh

Question 2

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.
-The resistance of the light bulb is 20 ohms.

Accepted Answer

A) True 
 B)False

Question 3

Two charged bodies separated by a distance d exert a repulsive electrical force on each other.The signs of the charges on the two bodies might be

Accepted Answer

A) + and +. 
B) - and -. 
C) + and -. 
D) any of the above. 
E) not determinable. 
A) + and +. 
B) - and -. 
C) + and -. 
D) any of the above. 
E) not determinable.

Question 4

An electric toaster operating on 120 volts draws a current of 9 amperes.What is the resistance of the toaster?

Accepted Answer

The answer of An electric toaster operating on 120 volts...

Question 5

The electric field shown is produced by a single point charge at the center of the picture.  
-What type of charge produces the electric field shown?

Accepted Answer

A) positive 
B) negative 
C) neutral 
D) impossible to tell 
A) positive 
B) negative 
C) neutral 
D) impossible to tell

Question 6

​Match each item with the correct statement below.
-superconductivity is lost when this is exceeded

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 7

If the voltage across the ends of a wire increases,the current in the wire __________.

Accepted Answer

The answer of If the voltage across the ends of...

Question 8

Superconductivity is lost when a certain ____is exceeded.

Accepted Answer

A) voltage 
B) current 
C) resistance 
D) electric field 
E) critical temperature 
A) voltage 
B) current 
C) resistance 
D) electric field 
E) critical temperature

Question 9

Voltage can also be called potential.

Accepted Answer

A) True 
 B)False

Question 10

The electric field shown is produced by a single point charge at the center of the picture.  
-If a new positive point charge is placed at location A directly to the right of the one pictured,the force on it will

Accepted Answer

A) be zero. 
B) push it to the right. 
C) push it to the left. 
D) be in an unknown direction. 
A) be zero. 
B) push it to the right. 
C) push it to the left. 
D) be in an unknown direction.

Question 11

Solids that are good conductors of heat tend also to be good conductors of electricity.

Accepted Answer

A) True 
 B)False

Question 12

Current is the opposition to the flow of charge.

Accepted Answer

A) True 
 B)False

Question 13

A quantity that measures the opposition to the flow of charge is __________.

Accepted Answer

The answer of A quantity that measures the opposition to...

Question 14

The resistance of a wire can be increased by

Accepted Answer

A) making the wire longer. 
B) lowering the temperature of the wire. 
C) making the wire thinner. 
D) making the wire shorter. 
A) making the wire longer. 
B) lowering the temperature of the wire. 
C) making the wire thinner. 
D) making the wire shorter.

Question 15

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.
-The power consumed by the light bulb is 20 watts.

Accepted Answer

A) True 
 B)False

Question 16

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 now

Accepted Answer

A) decreases by 1/4. 
B) decreases by 1/2. 
C) stays the same. 
D) increases by 2 times. 
E) increases by 4 times. 
A) decreases by 1/4. 
B) decreases by 1/2. 
C) stays the same. 
D) increases by 2 times. 
E) increases by 4 times.

Question 17

If the length 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 18

The resistance of a conducting material depends on its

Accepted Answer

A) composition. 
B) length. 
C) diameter. 
D) temperature. 
E) all of the above 
A) composition. 
B) length. 
C) diameter. 
D) temperature. 
E) all of the above

Question 19

A quantity that measures the opposition to the flow of charge is

Accepted Answer

A) voltage. 
B) current. 
C) resistance. 
D) electric field. 
E) critical temperature. 
A) voltage. 
B) current. 
C) resistance. 
D) electric field. 
E) critical temperature.

Question 20

The energy per unit charge supplied by a battery is its __________.

Accepted Answer

The answer of The energy per unit charge supplied by...

If you have 7 total 100-W light bulbs in a parallel circuit in your basement and you leave them on for 1.5 days,how much energy (in kilowatt hours)would be used?

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -The resistance of the light bulb is 20 ohms.

Two charged bodies separated by a distance d exert a repulsive electrical force on each other.The signs of the charges on the two bodies might be

An electric toaster operating on 120 volts draws a current of 9 amperes.What is the resistance of the toaster?

The electric field shown is produced by a single point charge at the center of the picture. -What type of charge produces the electric field shown?

Match each item with the correct statement below. -superconductivity is lost when this is exceeded

If the voltage across the ends of a wire increases,the current in the wire __________.

Superconductivity is lost when a certain ____is exceeded.

Voltage can also be called potential.

The electric field shown is produced by a single point charge at the center of the picture. -If a new positive point charge is placed at location A directly to the right of the one pictured,the force on it will

Solids that are good conductors of heat tend also to be good conductors of electricity.

Current is the opposition to the flow of charge.

A quantity that measures the opposition to the flow of charge is __________.

The resistance of a wire can be increased by

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -The power consumed by the light bulb is 20 watts.

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 now

If the length of a wire increases,its resistance

The resistance of a conducting material depends on its

A quantity that measures the opposition to the flow of charge is

The energy per unit charge supplied by a battery is its __________.

The Study of Motion

Newtons Laws

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electromagnetism and Em Waves

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Exam 7: Electricity

If you have 7 total 100-W light bulbs in a parallel circuit in your basement and you leave them on for 1.5 days,how much energy (in kilowatt hours)would be used?

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -The resistance of the light bulb is 20 ohms.

Two charged bodies separated by a distance d exert a repulsive electrical force on each other.The signs of the charges on the two bodies might be

An electric toaster operating on 120 volts draws a current of 9 amperes.What is the resistance of the toaster?

The electric field shown is produced by a single point charge at the center of the picture. -What type of charge produces the electric field shown?

​Match each item with the correct statement below. -superconductivity is lost when this is exceeded

If the voltage across the ends of a wire increases,the current in the wire __________.

Superconductivity is lost when a certain ____is exceeded.

Voltage can also be called potential.

The electric field shown is produced by a single point charge at the center of the picture. -If a new positive point charge is placed at location A directly to the right of the one pictured,the force on it will

Solids that are good conductors of heat tend also to be good conductors of electricity.

Current is the opposition to the flow of charge.

A quantity that measures the opposition to the flow of charge is __________.

The resistance of a wire can be increased by

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. -The power consumed by the light bulb is 20 watts.

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 now

If the length of a wire increases,its resistance

The resistance of a conducting material depends on its

A quantity that measures the opposition to the flow of charge is

The energy per unit charge supplied by a battery is its __________.

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. -superconductivity is lost when this is exceeded