physics chapter 22 – Flashcards

Most atoms normally have a net charge that is _______.

When we say charge is conserved, we mainly mean that charge can be _______.

Coulomb's law is most similar to which of these laws?

Electric charge can be transferred from one conducting body to another _______.

The net charge on a polarized molecule is normally _______.

An electric field is basically _______.

Electric potential, unlike electric potential energy, is measured in units of _______.

A highly-charged party balloon is not dangerous when it _______.

The electric field inside the dome of a highly charged Van de Graaff generator is _______.

The net charge on an energized capacitor is normally _______.

An electron volt, eV, is a unit of energy. Which is larger, a GeV or a MeV?

Which force binds atoms together to form molecules?

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

Strip electrons from an atom and the atom becomes a

To say that electric charge is quantized is to say that the charge on an object

To say that electric charge is conserved is to say that electric charge

A main difference between gravitational and electric forces is that electrical forces

The unit of electric charge, the coulomb, is the charge on

The electrical force between charges depends only on the charges'

Superconductors are noted for their

A transistor is an example of a

Rub electrons from your hair with a comb and the comb becomes

An electron and a proton

A difference between electric forces and gravitational forces is that gravitational forces are not affected by

If you comb your hair and the comb becomes positively charged, then your hair becomes

When the distance between two charges is halved, the electrical force between the charges

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.

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.

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

To say that an object is electrically polarized is to say

Every proton in the universe is surrounded by its own

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.

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...

Charge carriers in a metal are electrons rather than protons because electrons are

A highly charged child's balloon is not dangerous because... its outside surface is positively charged. the potential difference between the balloon and the child's hand is very small. rubber is not a good conductor of electricity.

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

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...

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?

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

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

The electric field inside an uncharged metal ball is zero. If the ball is negatively charged, the electric field inside the ball is then

Two charged particles held close to each other are released. As the particles move, the velocity of each increases. Therefore, their charges have

A proton and an electron are placed in an electric field. Which undergoes the greater acceleration?