Question 1

An object that has zero resistance is a

Accepted Answer

A) semiconductor. 
B) superconductor. 
C) diode. 
D) transistor. 
E) positive ion. 
A) semiconductor. 
B) superconductor. 
C) diode. 
D) transistor. 
E) positive ion.

Question 2

​Match each item with the correct statement below.
-employed in toasters and fuses

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 3

How much energy does a 100-watt light bulb use in 1 hour? Express your answer in (a)joules and in (b)kilowatt-hours.(c)Also find how much money it costs if electricity sells for 10 cents per kW-h.

Accepted Answer

(a)360,000

Question 4

The resistance of a wire does not change when its temperature changes.

Accepted Answer

A) True 
 B)False

Question 5

An electrostatic precipitator uses an electric field to remove smoke from the air.

Accepted Answer

A) True 
 B)False

Question 6

The energy used by a 100-watt light bulb in 1 hour is __________.

Accepted Answer

The answer of The energy used by a 100-watt light...

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 parallel across the same 120-volt source,the current drawn from the source remains at 6 amperes.

Accepted Answer

A) True 
 B)False

Question 8

Suppose current is flowing in a wire from right to left.Which way do the electrons in the wire move?

Accepted Answer

A) right to left 
B) left to right 
C) in circles 
D) It is impossible to tell. 
A) right to left 
B) left to right 
C) in circles 
D) It is impossible to tell.

Question 9

If two heaters are connected in parallel across the 120-volt source,the total power drawn from the source is __________.

Accepted Answer

The answer of If two heaters are connected in parallel...

Question 10

If the diameter of a wire increases,its resistance decreases.

Accepted Answer

A) True 
 B)False

Question 11

A simple electrical circuit has a constant voltage power supply and a variable resistor.As you increase the resistance the current flow _____________

Accepted Answer

A) increases 
B) decreases 
C) remains the same 
D) cannot be determined 
A) increases 
B) decreases 
C) remains the same 
D) cannot be determined

Question 12

The force on a charged object divided by the charge on the object 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 13

The energy used by a 100-watt light bulb in 1 hour is

Accepted Answer

A) 0.01 J. 
B) 360,000 J. 
C) 100 J. 
D) 6,000 J. 
E) none of the above. 
A) 0.01 J. 
B) 360,000 J. 
C) 100 J. 
D) 6,000 J. 
E) none of the above.

Question 14

What does a neutral atom become if it acquires an extra electron?

Accepted Answer

A) negatively charged 
B) positively charged 
C) an ion 
D) a molecule 
A) negatively charged 
B) positively charged 
C) an ion 
D) a molecule

Question 15

AC voltages can be easily increased or decreased through use of a __________.

Accepted Answer

The answer of AC voltages can be easily increased or...

Question 16

A light bulb designed for use with AC would still work if hooked up to DC of the proper voltage.

Accepted Answer

A) True 
 B)False

Question 17

In a circuit connected to a battery,the current flows from negative pole toward the positive pole of the battery.

Accepted Answer

A) True 
 B)False

Question 18

The rate of flow of electric charge is __________.

Accepted Answer

The answer of The rate of flow of electric charge...

Question 19

The rate of flow of electric 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

Fuses and circuit breakers are used to prevent

Accepted Answer

A) electrical shocks. 
B) wires overheating and causing fires. 
C) save on the cost of electricity. 
D) to store energy. 
A) electrical shocks. 
B) wires overheating and causing fires. 
C) save on the cost of electricity. 
D) to store energy.

An object that has zero resistance is a

Match each item with the correct statement below. -employed in toasters and fuses

How much energy does a 100-watt light bulb use in 1 hour? Express your answer in (a)joules and in (b)kilowatt-hours.(c)Also find how much money it costs if electricity sells for 10 cents per kW-h.

The resistance of a wire does not change when its temperature changes.

An electrostatic precipitator uses an electric field to remove smoke from the air.

The energy used by a 100-watt light bulb in 1 hour is __________.

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 remains at 6 amperes.

Suppose current is flowing in a wire from right to left.Which way do the electrons in the wire move?

If two heaters are connected in parallel across the 120-volt source,the total power drawn from the source is __________.

If the diameter of a wire increases,its resistance decreases.

A simple electrical circuit has a constant voltage power supply and a variable resistor.As you increase the resistance the current flow _____________

The force on a charged object divided by the charge on the object is

The energy used by a 100-watt light bulb in 1 hour is

What does a neutral atom become if it acquires an extra electron?

AC voltages can be easily increased or decreased through use of a __________.

A light bulb designed for use with AC would still work if hooked up to DC of the proper voltage.

In a circuit connected to a battery,the current flows from negative pole toward the positive pole of the battery.

The rate of flow of electric charge is __________.

The rate of flow of electric charge is

Fuses and circuit breakers are used to prevent

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

Exam 7: Electricity

An object that has zero resistance is a

​Match each item with the correct statement below. -employed in toasters and fuses

How much energy does a 100-watt light bulb use in 1 hour? Express your answer in (a)joules and in (b)kilowatt-hours.(c)Also find how much money it costs if electricity sells for 10 cents per kW-h.

The resistance of a wire does not change when its temperature changes.

An electrostatic precipitator uses an electric field to remove smoke from the air.

The energy used by a 100-watt light bulb in 1 hour is __________.

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 remains at 6 amperes.

Suppose current is flowing in a wire from right to left.Which way do the electrons in the wire move?

If two heaters are connected in parallel across the 120-volt source,the total power drawn from the source is __________.

If the diameter of a wire increases,its resistance decreases.

A simple electrical circuit has a constant voltage power supply and a variable resistor.As you increase the resistance the current flow _____________

The force on a charged object divided by the charge on the object is

The energy used by a 100-watt light bulb in 1 hour is

What does a neutral atom become if it acquires an extra electron?

AC voltages can be easily increased or decreased through use of a __________.

A light bulb designed for use with AC would still work if hooked up to DC of the proper voltage.

In a circuit connected to a battery,the current flows from negative pole toward the positive pole of the battery.

The rate of flow of electric charge is __________.

The rate of flow of electric charge is

Fuses and circuit breakers are used to prevent

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. -employed in toasters and fuses