Question 1

On some early automobiles both headlights went out when one bulb burned out. The headlights must have been connected in

Accepted Answer

A)  parallel. 
B)  perpendicular. 
C)  haste. 
D)  series. 
A)  parallel. 
B)  perpendicular. 
C)  haste. 
D)  series.

Question 2

An uncharged pith ball is suspended by a nylon fiber. When a negatively charged rubber rod is brought nearby, without touching it, the pith ball

Accepted Answer

A)  becomes polarized. 
B)  is repelled by the rod. 
C)  becomes charged by induction. 
D)  in unaffected. 
E)  None of the above choices are correct. 
A)  becomes polarized. 
B)  is repelled by the rod. 
C)  becomes charged by induction. 
D)  in unaffected. 
E)  None of the above choices are correct.

Question 3

When a car is struck by lightning, the resulting electric field inside the car is

Accepted Answer

A)  zero. 
B)  normally huge for a time longer than the lightning stroke itself. 
C)  small enough to be safe for an occupant inside. 
D)  normally huge, but for a brief time. 
A)  zero. 
B)  normally huge for a time longer than the lightning stroke itself. 
C)  small enough to be safe for an occupant inside. 
D)  normally huge, but for a brief time.

Question 4

When a single charge q is placed on one corner of a square, the electric field at the center of the square is F/q. If three other equal charges are placed on the other corners, the electric field at the center of the square due to these four equal charges is

Accepted Answer

A)  F/q. 
B)  F/(2q). 
C)  F/(4q). 
D)  4F/q. 
E)  None of the above choices are correct. 
A)  F/q. 
B)  F/(2q). 
C)  F/(4q). 
D)  4F/q. 
E)  None of the above choices are correct.

Question 5

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

Accepted Answer

A)  neutrons in the nucleus. 
B)  electrons that surround the nucleus. 
C)  Choices A and B are both correct. 
D)  Choices A and B are both incorrect. 
A)  neutrons in the nucleus. 
B)  electrons that surround the nucleus. 
C)  Choices A and B are both correct. 
D)  Choices A and B are both incorrect.

Question 6

A balloon will stick to a wooden wall if the balloon is charged

Accepted Answer

A)  positively. 
B)  negatively. 
C)  either positively or negatively. 
D)  None of the above choices are correct. 
A)  positively. 
B)  negatively. 
C)  either positively or negatively. 
D)  None of the above choices are correct.

Question 7

Stretch a copper wire so that it is thinner and the resistance between its ends

Accepted Answer

A)  remains unchanged. 
B)  decreases. 
C)  increases. 
A)  remains unchanged. 
B)  decreases. 
C)  increases.

Question 8

A positive ion has more

Accepted Answer

A)  neutrons than protons. 
B)  protons than electrons. 
C)  protons than neutrons. 
D)  electrons than neutrons. 
E)  electrons than protons. 
A)  neutrons than protons. 
B)  protons than electrons. 
C)  protons than neutrons. 
D)  electrons than neutrons. 
E)  electrons than protons.

Question 9

A 100-Watt lamp glows brighter than a 25-Watt lamp. The electrical resistance of the 100-Watt lamp must be

Accepted Answer

A)  greater. 
B)  the same. 
C)  less. 
A)  greater. 
B)  the same. 
C)  less.

Question 10

Which is more dangerous, touching a faulty 110-volt light fixture, or a Van de Graaff generator charged to 100,000 volts?

Accepted Answer

A)  touching the light fixture 
B)  touching the generator 
C)  Touching both are about equally dangerous. 
A)  touching the light fixture 
B)  touching the generator 
C)  Touching both are about equally dangerous.

Question 11

A highly charged child's balloon is not dangerous because

Accepted Answer

A)  its outside surface is positively charged. 
B)  rubber is not a good conductor of electricity. 
C)  the potential difference between the balloon and the child's hand is very small. 
D)  None of the above choices are correct. 
A)  its outside surface is positively charged. 
B)  rubber is not a good conductor of electricity. 
C)  the potential difference between the balloon and the child's hand is very small. 
D)  None of the above choices are correct.

Question 12

Two lamps, one with a thick filament and one with a thin filament of the same material, are connected in series to a battery. The voltage is greater across the lamp with the

Accepted Answer

A)  thin filament. 
B)  thick filament. 
C)  Voltage is the same for both. 
A)  thin filament. 
B)  thick filament. 
C)  Voltage is the same for both.

Question 13

Connect a pair of lamps in series and you draw current from the connected battery. Connect the same lamps in parallel and you draw

Accepted Answer

A)  more current. 
B)  less current. 
C)  the same current. 
D)  sometimes more, sometimes less. 
A)  more current. 
B)  less current. 
C)  the same current. 
D)  sometimes more, sometimes less.

Question 14

Superconductors are noted for their

Accepted Answer

A)  bright colors. 
B)  absence of electric resistance. 
C)  low cost. 
D)  high electric resistance. 
E)  low electric resistance. 
A)  bright colors. 
B)  absence of electric resistance. 
C)  low cost. 
D)  high electric resistance. 
E)  low electric resistance.

Question 15

Which force binds atoms together to form molecules?

Accepted Answer

A)  electrical 
B)  nuclear 
C)  centripetal 
D)  gravitational 
E)  none of these 
A)  electrical 
B)  nuclear 
C)  centripetal 
D)  gravitational 
E)  none of these

Question 16

Modern automobile headlights are connected in

Accepted Answer

A)  series. 
B)  perpendicular. 
C)  parallel. 
D)  none of these 
A)  series. 
B)  perpendicular. 
C)  parallel. 
D)  none of these

Question 17

As more lamps are put into a series circuit, the overall current in the power source

Accepted Answer

A)  stays the same. 
B)  decreases. 
C)  increases. 
A)  stays the same. 
B)  decreases. 
C)  increases.

Question 18

A heater uses 20 A when used in a 110-V line. If electric power costs 10 cents per kilowatt hour, the cost of running the heater for 10 hours is

Accepted Answer

A)  $5.50. 
B)  $2.20. 
C)  $0.55. 
D)  $0.22. 
E)  none of these 
A)  $5.50. 
B)  $2.20. 
C)  $0.55. 
D)  $0.22. 
E)  none of these

Question 19

Alternating current is normally produced by a

Accepted Answer

A)  battery. 
B)  generator. 
C)  both of these 
D)  neither of these 
A)  battery. 
B)  generator. 
C)  both of these 
D)  neither of these

Question 20

A wire carrying a current is normally charged

Accepted Answer

A)  negatively. 
B)  positively. 
C)  not at all. 
A)  negatively. 
B)  positively. 
C)  not at all.

On some early automobiles both headlights went out when one bulb burned out. The headlights must have been connected in

An uncharged pith ball is suspended by a nylon fiber. When a negatively charged rubber rod is brought nearby, without touching it, the pith ball

When a car is struck by lightning, the resulting electric field inside the car is

When a single charge q is placed on one corner of a square, the electric field at the center of the square is F/q. If three other equal charges are placed on the other corners, the electric field at the center of the square due to these four equal charges is

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

A balloon will stick to a wooden wall if the balloon is charged

Stretch a copper wire so that it is thinner and the resistance between its ends

A positive ion has more

A 100-Watt lamp glows brighter than a 25-Watt lamp. The electrical resistance of the 100-Watt lamp must be

Which is more dangerous, touching a faulty 110-volt light fixture, or a Van de Graaff generator charged to 100,000 volts?

A highly charged child's balloon is not dangerous because

Two lamps, one with a thick filament and one with a thin filament of the same material, are connected in series to a battery. The voltage is greater across the lamp with the

Connect a pair of lamps in series and you draw current from the connected battery. Connect the same lamps in parallel and you draw

Superconductors are noted for their

Which force binds atoms together to form molecules?

Modern automobile headlights are connected in

As more lamps are put into a series circuit, the overall current in the power source

A heater uses 20 A when used in a 110-V line. If electric power costs 10 cents per kilowatt hour, the cost of running the heater for 10 hours is

Alternating current is normally produced by a

A wire carrying a current is normally charged

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Exam 10: Static and Current Electricity

On some early automobiles both headlights went out when one bulb burned out. The headlights must have been connected in

An uncharged pith ball is suspended by a nylon fiber. When a negatively charged rubber rod is brought nearby, without touching it, the pith ball

When a car is struck by lightning, the resulting electric field inside the car is

When a single charge q is placed on one corner of a square, the electric field at the center of the square is F/q. If three other equal charges are placed on the other corners, the electric field at the center of the square due to these four equal charges is

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

A balloon will stick to a wooden wall if the balloon is charged

Stretch a copper wire so that it is thinner and the resistance between its ends

A positive ion has more

A 100-Watt lamp glows brighter than a 25-Watt lamp. The electrical resistance of the 100-Watt lamp must be

Which is more dangerous, touching a faulty 110-volt light fixture, or a Van de Graaff generator charged to 100,000 volts?

A highly charged child's balloon is not dangerous because

Two lamps, one with a thick filament and one with a thin filament of the same material, are connected in series to a battery. The voltage is greater across the lamp with the

Connect a pair of lamps in series and you draw current from the connected battery. Connect the same lamps in parallel and you draw

Superconductors are noted for their

Which force binds atoms together to form molecules?

Modern automobile headlights are connected in

As more lamps are put into a series circuit, the overall current in the power source

A heater uses 20 A when used in a 110-V line. If electric power costs 10 cents per kilowatt hour, the cost of running the heater for 10 hours is

Alternating current is normally produced by a

A wire carrying a current is normally charged

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