Two charged particles held close to each other are released. As the particles move, the velocity of each increases. Therefore, their charges have
  • None of the above choices are correct - the net charge is zero.
  • None of the above choices are correct.
  • either the same or opposite signs.
  • F.
Electric charge can be transferred from one conducting body to another _______.
  • magnitude and separation distance.
  • electrons that surround the nucleus.
  • by both contact and closeness
  • volts
The net charge on a charged capacitor depends on... the distance between the capacitor plates. the area of the capacitor plates. the medium between the capacitor plates. All of the above choices are correct.
  • either the same or opposite signs.
  • None of the above choices are correct - the net charge is zero.
  • a specific large number of electrons.
  • None of the above choices are correct.
Superconductors are noted for their
  • a vector quantity
  • absence of electric resistance.
  • a specific large number of electrons.
  • electric field and gravitational field.
Two charges separated by one meter exert 1-N forces on each other. If the charges are pulled to 3-m separation distance, the force on each charge will be...
  • 10 J.
  • energy.
  • 0.11 N.
  • F.
To say that electric charge is quantized is to say that the charge on an object
  • None of the above choices are correct - the net charge is zero.
  • by both contact and closeness
  • a specific large number of electrons.
  • is a whole-number multiple of the charge of one electron.
Two charged particles attract each other with a force F. If the charges of both particles are doubled, and the distance between them also doubled, then the force of attraction will be
  • zero
  • F/q.
  • either the same or opposite signs.
  • F.
The electrical force between charges depends only on the charges'
  • magnitude and separation distance.
  • negatively charged.
  • None of the above choices are correct.
  • by both contact and closeness
To say that electric charge is conserved is to say that electric charge
  • contains little overall energy
  • its charges have been rearranged.
  • 30 N/C
  • can be neither created nor destroyed.
When a single charge q is placed at one corner of a square, the electric field at the center of the square is F/q. If two other equal charges are placed at the adjacent corners of the square, the electric field at the center of the square due to these three equal charges is
  • F/q.
  • 10 J.
  • zero
  • F.
The electric field inside an uncharged metal ball is zero. If the ball is negatively charged, the electric field inside the ball is then
  • zero
  • GeV
  • None of the above choices are correct.
  • energy.
The electrical force on a 2-C charge is 60 N. What is the value of the electric field at the place where the charge is located?
  • zero
  • 30 N/C
  • volts
  • None of the above choices are correct.
When the distance between two charges is halved, the electrical force between the charges
  • zero.
  • quadruples.
  • electron
  • loosely bound.
Electric potential, unlike electric potential energy, is measured in units of _______.
  • volts
  • loosely bound.
  • zero
  • zero.
Assume that 10 J of work is needed to push a charge, at rest, into an electric field. After the charge is released there, it flies back to its starting position and its kinetic energy there will be...
  • energy.
  • F/q.
  • zero
  • 10 J.
A main difference between gravitational and electric forces is that electrical forces
  • a vector quantity
  • negatively charged.
  • repel or attract.
  • loosely bound.
When we say charge is conserved, we mainly mean that charge can be _______.
  • transferred without loss, like money in a bank
  • electrons that surround the nucleus.
  • is a whole-number multiple of the charge of one electron.
  • by both contact and closeness
A highly-charged party balloon is not dangerous when it _______.
  • contains little overall energy
  • 30 N/C
  • repulsive interaction
  • None of the above choices are correct.
You can touch a 100,000-volt Van de Graaff generator with little harm because although the voltage is high, the relatively small amount of charge means there is a relatively small amount of
  • electron
  • 10 J.
  • energy.
  • zero.
The net charge on an energized capacitor is normally _______.
  • zero
  • zero.
  • a specific large number of electrons.
  • GeV
If you comb your hair and the comb becomes positively charged, then your hair becomes
  • positive ion.
  • negatively charged.
  • quadruples.
  • electrons that surround the nucleus.
In an electrically neutral atom the number of protons in the nucleus is equal to the number of
  • None of the above choices are correct.
  • by both contact and closeness
  • its charges have been rearranged.
  • electrons that surround the nucleus.
To say that an object is electrically polarized is to say
  • either the same or opposite signs.
  • is a whole-number multiple of the charge of one electron.
  • its charges have been rearranged.
  • a specific large number of electrons.
Coulomb's law is most similar to which of these laws?
  • repulsive interaction
  • can be neither created nor destroyed.
  • contains little overall energy
  • Newton's law of gravity
A proton and an electron are placed in an electric field. Which undergoes the greater acceleration?
  • electrical
  • electron
  • zero
  • zero.
The electric field inside the dome of a Van de Graaff generator... depends on the volume of the dome depends on the amount of charge the outside of dome. Choices A and B are both correct.
  • magnitude and separation distance.
  • None of the above choices are correct - the net charge is zero.
  • None of the above choices are correct.
  • a specific large number of electrons.
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... half as much. twice as much. the same. four times as much.
  • zero
  • None of the above choices are correct.
  • None of the above choices are correct - the net charge is zero.
  • either the same or opposite signs.
The electric field inside the dome of a highly charged Van de Graaff generator is _______.
  • zero
  • GeV
  • electron
  • volts
Rub electrons from your hair with a comb and the comb becomes
  • attract each other.
  • negatively charged.
  • magnitude and separation distance.
  • positive ion.
Every proton in the universe is surrounded by its own
  • a specific large number of electrons.
  • electrons that surround the nucleus.
  • magnitude and separation distance.
  • electric field and gravitational field.
A difference between electric forces and gravitational forces is that gravitational forces are not affected by
  • contains little overall energy
  • repulsive interaction
  • repel or attract.
  • can be neither created nor destroyed.
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