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Science 9
Review Quiz
1) Draw a parallel circuit with three loads (two of them must be different), a switch that
controls one of the loads, and 5 cells.
2) Draw a series circuit with a 6 cell battery, three light bulbs an ammeter, a voltmeter and
an open switch that controls 2 of the light bulbs.
3) What are the parts of a motor and their function?
4) What device do you use to measure small currents?
5) For the following variable state what they stand for and the units used to measure them
a. P=
b. E=
c. I=
d. V=
e. t=
f. R=
6) For each of the following write the equation that would solve for the variable you are
looking for. Show all of your work.
For example: You are looking for mass from the formula D=m/v
v xD= (m/v) x v (the v’s are going to cross out on the right hand side)
vxD=m
Therefore, our equation to solve for m is
m= D x v
Now it’s your turn
a) From the equation P= E/t solve for t
b) From the equation P= IV solve for V
c) From the equation V= IR solve for I
7) Fill in the blanks
•
High voltage means
•
High
•
High temperature means more
resistance
means low resistance
8) Draw a cell. Be sure to label all of the parts
9) A six volt battery supplies power to a cordless curling iron with a resistance of 12 ohms.
How much current is flowing through the curling iron?
10) A CD player with a resistance of 40 ohms has a current of 0.1 amps flowing through it.
Sketch the circuit diagram and calculate how many volts supply the CD player?
11) What are factors that affect resistance? Hint there are 4 of them.
12) Batteries convert
energy into
energy
13) Motors convert
energy into
energy
14) Generators convert
energy into
energy
15) Solar panels convert
16) What is the formula for glucose?
17) Who made the first motor?
18) Compare AC and DC
19) Draw and label a step down transformer.
energy into
energy
b) Where might this type of transformer be used?
20) A curling iron is plugged into a 98-V outlet. It uses 8.33-A of current. What is the power
rating of the iron?
21) What is the wattage of a frying pan that uses 789,000 joules of energy to cook potatoes
for 34 hrs?