Static Electricity
Practice Test
1.
Materials through which electrical charges will not move easily are called __________.
a.
insulators
b.
ions
c.
conductors
d.
grounders
Hint
2.
A negative charge of -4.5×10
-3
C and a positive charge of 6.5×10
-3
C are separated by 0.50 m. What is the magnitude of the force between the two charges?
a.
2.6 × 10
5
N
b.
2.2 × 10
6
N
c.
1.1 × 10
6
N
d.
2.9 × 10
-5
N
Hint
3.
Charging by induction occurs when __________.
a.
electric charge causes the leaves of an electroscope to spread apart
b.
charge separation is used to charge an object without touching it
c.
a negatively-charged rod is touched to the knob of an electroscope
d.
a neutral body is charged by touching it with a charged body
Hint
4.
Materials that allow charges to move about easily are called __________.
a.
facilitators
b.
insulators
c.
conductors
d.
plastics
Hint
