Electricity Review Questions
1. What are the three ways to charge an object and how do they
work?
2. Using the electrostatic series, which of the following will be
positively charged and which will be negatively charged when
rubbed together?
a) wool
acetate
b) aluminum
cotton
c) ebonite
paraffin wax
d) human hair
wool
e) silk
cotton
f) glass
silk
3. What is the difference between current and voltage.
4. Compare a water circuit and an electrical circuit on the following
criteria. (material used, in what the material travels, the stored
energy, used to control the flow)
5. How is lightning made?
6. What is a lightning rod and how does it work?
7. Why does your hair stand on end when you rub it with a balloon?
8. What is the difference between a conductor, an insulator, and a
resistor?
9. Why do gasoline tanks have metal chains touching the ground
while they are driving?
10. Where can a switch be placed in a circuit?
11. Ammeters are always connected in
12. Voltmeters are always connected in
13. Fill in the following diagrams with the # of electrons, # of
protons, the leaves of the electroscope, and the placement of
electrons and protons.
14. Draw schematic diagrams for the following circuits
 the switch controls current returning to the power supply
 the two bulbs are connected in series
 voltage is measured across the source
 voltage is measured across both bulbs




a switch controls the current between the 2nd and 1st bulb
all four bulbs are connected in series
voltage is measured across the first two bulbs
voltage is measured across the last two bulbs





all three bulbs are connected in parallel
one switch controls only the 2nd bulb
the other switch controls all three bulbs
voltage is measured across the first bulb
voltage is measured across the battery






a switch controls the current returning to the power supply
all five bulbs are connected in parallel
current is measured flowing through the 3rd and 5th bulb
current is measured as it leaves the power supply
voltage is measured across the 4th bulb
the first two bulbs have their own switches
Z
Y
X
U
V
P
M
S
W
T
O
R
N
Q
Which lights will remain lit when the following switches are opened?
a)
b)
c)
d)
e)
f)
g)
h)
i)
Y
X
W
U
V
T
S
R
Q
Which lights will remain lit when the following switches are closed?
j) Y
k) X
l) W
m) U
n) V
o) T
p) S
q) R
r) Q