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TEST ID: ___A
UNIT V: ELECTRICITY & MAGNETISM
Test 6
CONCEPTUAL PHYSICS
Rutland High School
DO NOT WRITE ON THIS TEST! WRITE YOUR “TEST ID” ON YOUR ANSWER DOCUMENT.
MULTIPLE CHOICE (2 points each):
Select the letter that corresponds to the choice that best completes the statement or answers the question. Completely fill in the
box for the letter you have selected.
1.
Resistance is measured in a unit called the ________.
a.
b.
2.
c.
d.
parallel circuit
series circuit
magnet
resistor
c.
d.
transformer
circuit breaker
DC
b.
alternating current
direct current
c.
d.
voltage.
resistance.
c.
d.
proton
neutron
c.
d.
a.
b.
AC
circuit current
magnetic current
current.
electrical potential.
coulomb
electron
electrical energy
electrical power
c.
d.
electrical resistance
voltage regulation
11. The function of an electric motor is to change ________.
a.
b.
c.
d.
chemical energy to electrical energy
electrical energy to chemical energy
electrical energy to mechanical energy
mechanical energy to electrical energy
12. What is the potential difference across a resistor of 5.0 Ω
that carries a current of 5.0 A?
a.
b.
1.0 V
4.0 V
c.
d.
10 V
25 V
13. ______ is the opposition posed by a material to the flow
of current.
a.
b.
Which of the following is a negatively charged particle?
a.
b.
9.
circuit diagram
electron circuit
The rate at which charges move through a conductor is
a.
b.
8.
parallel current
series current
Current that does NOT reverse direction is called
a.
b.
7.
c.
d.
Current from a battery is always
a.
6.
parallel circuit
series circuit
Which of the following is a device designed to open an
overloaded circuit and prevent overheating?
a.
b.
5.
volt
ampere
A circuit that has two or more branches for electrons to
follow is a(n) ________.
a.
b.
4.
c.
d.
A path that allows only one route for an electric current is
called a ________.
a.
b.
3.
ohm
coulomb
10. The rate at which an electrical device converts energy
from one form to another is called ________.
Resistance
Charge
c.
d.
Voltage
Ampere
14. Which of the following is the correct relationship among
power, current, and voltage?
a.
b.
𝑃 = 𝐼/𝑉
𝑃 = 𝐼·𝑉
c.
d.
𝑉 =𝑃·𝐼
𝐸 = 𝑃·𝑡
15. When resistors are put in parallel with each other, their
overall resistance is
a.
b.
c.
d.
larger than the resistance of any other resistor.
the same as the resistance of any other resistor.
smaller than the resistance of one of the resistors.
let’s face it, who really cares?
16. What is the equivalent resistance (REQ) of a 4.0 Ω, a 6.0 Ω,
and an 8.0 Ω resistor if the three are connected in series?
Alternating current is made by
a.
b.
generators.
batteries.
c.
d.
electromagnets.
none of the above
a.
b.
1.8
6.0
c.
d.
8.0
18
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17. When one light bulb in a series circuit containing several
light bulbs burns out
a.
b.
c.
d.
none of the other bulbs will light up.
nothing changes in the rest of the circuit.
the other light bulbs burn brighter.
the other light bulbs burn dimmer.
18. When one light bulb in a parallel circuit containing several
light bulbs burns out, the other light bulbs will
a.
b.
not burn at all.
burn the same.
c.
d.
burn brighter.
burn dimmer.
19. If a loop of wire moves in and out of a magnetic field, a
_____ is induced.
25. The needle of a compass placed near a current-carrying
wire will
a.
b.
c.
d.
align with the magnetic field produced by the current.
create a magnetic field.
always point north.
always point south.
26. A generator is used to light a bulb. Energy for lighting the
bulb actually comes from
a.
b.
c.
d.
a plug where the generator is connected to the wall.
a mechanical input to the generator.
the magnet in the generator.
the coil of the wire.
27. Generators convert
a.
b.
voltage
force
c.
d.
current
charge
20. In order to make an electromagnet, you need a
a.
b.
c.
d.
loop of wire, contacts, and a battery.
magnet, a nail, and some wires.
battery, a nail, and a magnet.
battery, some wire, and a nail.
21. A device that increases or decreases voltage in a power
line is a __________.
a.
b.
transformer
generator
c.
d.
motor
commutator
22. The statement that current is equal to the voltage
difference divided by the resistance is known as _______.
a.
b.
Einstein’s equation
Ohm’s law
c.
d.
Newton’s law
Faraday’s law
23. The strength of the magnetic field of an electromagnet
can be increased by
a.
b.
c.
d.
decreasing the number of loops.
decreasing the current.
increasing the number of loops.
increasing the resistance.
24. The battery in an iPod has a terminal voltage of 12 V.
What is the potential difference across the entire iPod?
a.
b.
3.0 V
4.0 V
c.
d.
6.0 V
12 V
a.
b.
c.
d.
chemical energy to electrical energy.
electrical energy to chemical energy.
mechanical energy to electrical energy.
electrical energy to mechanical energy.
28. Electric current can best be induced in a wire by
a.
b.
c.
d.
stretching the wire.
rotating the wire.
setting the wire near a magnet.
moving a magnet up and down near the wire.
29. Which of these wires has the GREATEST resistance?
a.
b.
c.
d.
a wire 10 cm in length and 3 cm in diameter
a wire 5 cm in length and 3 cm in diameter
a wire 10 cm in length and 5 cm in diameter
a wire 5 cm in length and 5 cm in diameter
30. In alternating current, the motion of the charges
a.
b.
c.
d.
is in the direction of the electric field.
continuously changes directions
is equal to the speed of light.
is greater than the speed of light.
THIS ENDS THE MULTIPLE CHOICE SECTION OF YOUR TEST
GO TO THE FREE-RESPONSE SECTION
ON YOUR ANSWER DOCUMENT
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