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WorksheetsMidterm Review
Total questions: 21
Worksheet time: 16mins
Name
Class
Date
1.
Two like charges
a)
neutralize each other.
b)
repel each other.
c)
must be neutrons.
d)
attract each other.
2.
What does it mean when the electric field lines are close together?
a)
the field is positive
b)
the field is negative
c)
The field is strong
d)
the field is weak
3.
When a balloon is rubbed on clothes it acquires a charge by ___________
a)
Induction
b)
reduction
c)
friction
d)
concuction
4.
What do you call the process of charging a conductor by bringing it near another charged object?
a)
induction
b)
polarization
c)
neutralization
d)
conduction
5.
Which of the following labeled points is in the region with the strongest force of electric charge
a)
A
b)
B
c)
C
d)
D
6.
Which of the following is not a good conductor of electricity?
a)
copper
b)
silver
c)
Glass
d)
aluminum
7.
Which of the following is not a good insulator?
a)
Copper
b)
Glass
c)
rubber
d)
wool
8.
Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?
a)
9E-9 N
b)
9E9 N
c)
1.1E10 N
d)
1.1E-10 N
9.
What causes current to flow?
a)
potential difference
b)
energy
c)
electricity
d)
magnetism
10.
A current -carrying coil of wire with many loops is called a (n)
a)
aurora
b)
resistor
c)
motor
d)
solenoid
11.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will get brighter.
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
12.
If you know the power rating of an appliance and the voltage of the line it is attached to, you can calculate the current the appliance uses by
a)
multiplying the voltage by the power.
b)
dividing the power by the voltage.
c)
dividing the voltage by the power.
d)
subtracting the power from the voltage.
13.
A 20-volt relay has a coil resistance of 200 ohms. How much current does it draw? V=IR, P=IV
a)
0.10 A
b)
10 A
c)
400 A
d)
4000 A
14.
If a small appliance is rated at a current of 10 amps and a voltage of 120 volts, the power rating would be ______ Watts. (V = IR, P = I V )
a)
12 W
b)
120 W
c)
1200 W
d)
0.083 A
15.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles.
d)
the middle.
16.
It is possible for a magnet to have only one pole.
a)
True
b)
False
17.
This is an example of...
a)
attraction
b)
repulsion
18.
Which of the following does NOT cause the domains of a magnet's atoms to lose alignment?
a)
Dropping the magnet
b)
Hitting the magnet too hard
c)
Increasing the temperature of the magnet
d)
Putting the magnet in the refrigerator
19.
Materials that can be magnetized are called _____ materials.
a)
ferromagnetic
b)
magnetite
c)
magnetic force
d)
attracted
20.
This is an example of magnets...
a)
attracting to each other.
b)
repelling each other.
21.
You can make an electromagnet stronger by: using __________________ coils of wire
a)
bigger
b)
smaller
c)
more
d)
less
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