Download Electrostatics Review What is the charge of one electron?

Electrostatics Review
What is the charge of one electron?
Answer:
• -1.6E-19 C
Coulomb’s 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