Electrostatics Review - hudson.k12.oh.us

Electrostatics Review What is the charge of one electron?

Answer: -1.6E-19 C \

Coulombs law says that the force between any two charges depends on what? Answer:

The sizes of the charges and inversely on the square of the distance between the charges F = kqq/d2

Two charges are separated by a certain distance. If the magnitude of each charge is doubled, the force on each charge is.. Answer:

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

Answer: Quadruples What does electrical forces have that gravitational forces do not?

Answer: Repulsive interactions

What are charges doing in a conductor and insulator? Answer:

Conductor Moving freely Insulator Not moving at all What are semiconductors?

Answer: Can be insulators Can be conductors

Have impurities to change their electrical properties How do you charge by induction?

Answer: Have a charged rod opposite the charge you want the object to be-bring it close to the

object. Ground the object The object is now charged

A charged balloon will stick to a neutral wall, which demonstrates charge. Answer:

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

Answer: Can not determine them

If the acceleration between two charged particles decreases, the particles have what kind of charges? Answer:

The same When comparing gravitational fields with electric fields, the magnitude of g is most like

what in the electrical field? Answer: The strength of the electric field

What will happen to the electrical potential energy of a charged particle in an electric field when the particle is released?

Answer: Energy is transformed into KE

When work is done to move two like charges close together, that work is the what in the system? Answer:

Electric Potential

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