Font size
WorksheetsCredit Repair Physics Final
Total questions: 40
Worksheet time: 20mins
When is an atom considered neutral?
When there is double the number of protons than electrons
When the amount of protons and neutrons is the same
When the number of electrons is the same than the number of protons
When the number of neutrons equals the number of protons
A conductor is any substance that
allows free electrons move around
keep free electrons tightly bound
cannot conduct electricity
limit the flow of electrons
For an object to be polarized
the positive and negative charges must separate within the object
the object must gain protons
the object must gain protons and lose electrons
the object must be overall negative
In Coulomb's law, what is the relationship between the electric force and the distance between charges?
Directly proportional relationship
Inversely proportional to the square of the distance
Exponential relationship
Quadratic relationship
Two particles experience an attractive electric force of 5 N. If one of the charges triples and the distance between them doubles, what is the new electric force?
7.5 N
3.75 N
37.5 N
15 N
A good example of an insulator is
rubber
copper
aluminum
chlorinated water
Which of the following will cause the current through an electrical circuit to decrease?
decrease the voltage
decrease the resistance
increase the voltage
increase the voltage and decrease the resistance
Conventional current says that charges are flowing from the positive terminal of a battery to the negative. What is really happening inside the battery?
negative charges are moving in the opposite direction to conventional current flow
charges are staying still
positive charges are moving from the positive terminal to the negative
negative charges become positive charges to move through the circuit
Which of the following will cause the current through an electrical circuit to decrease?
increase resistance
increase voltage
increase resistance and voltage
decrease voltage and resistance
A certain electrical circuit contains a battery with three cells, wires and a light bulb. Which of the following would cause the bulb to shine less brightly?
decrease the resistance of the circuit
increase the resistance of the circuit
You have likely been warned to avoid contact with electrical appliances or even electrical outlets when your hands are wet. Such contact is more dangerous when your hands are wet (vs. dry) because wet hands cause ____.
your resistance to be higher
your resistance to be lower
the voltage of the circuit to be higher
the voltage of the circuit to be lower
An electrical device with a resistance of 3.0 Ω will allow a current of 4.0 amps to flow through it if a voltage drop of ________ Volts is impressed across the device.
0.75
7
1.33
12
When a voltage of 120 V is impressed across an electric heater, a current of 10.0 amps will flow through the heater if the resistance is ________ Ω.
1200
12
0.0833
A series circuit has _______ pathway(s) and a parallel circuit has ___________ pathway(s).
one, multiple
multiple, multiple
one, one
multiple, one
What equation do you use to find the total equivalent resistance of a series circuit?
Req = R1 + R2 + R3 + ...
1/Req = 1/R1 + 1/R2 + 1/R3 + ...
In the circuit shown, what is the current through the 2-ohm resistor?
0.2 A
5.0 A
0.8 A
8.0 A
On the diagram shown, identify which would be considered a full wavelength. Choose all that apply.
A to C
B to F
C to G
D to F
Using the image shown, identify the amplitude of a wave.
A
B
C
D
E
The frequency of a wave is
the number of waves that pass a fixed location each second
the time it takes for one wave to pass a fixed point
the distance between two crests
the time it takes for the crest and trough to switch places
Wave speed is dependent on
the force of the wave
the medium the wave is traveling in
the frequency of the wave
the wavelength of the wave
Which best describes the motion of transverse waves?
oscillation is parallel to the direction in which the wave is travelling
oscillation is perpendicular to the direction in which the wave is travelling
oscillation is parallel and perpendicular to the direction in which the wave is traveling
What is another term to describe the compression and expansion in longitudinal waves?
parallel and perpendicular
rarefaction and compression
compression and compression
rarefaction and expansion
A wave is defined as
transporting matter and energy from one location to another
transporting matter from one location to another
transporting energy from one location to another
Sound is a
longitudinal wave
transverse wave
surface wave
electromagnetic wave
Sound waves spread outward because air particles collide with the air particles around them.
True
False
The pitch of a wave is determined by the wave's
frequency
wavelength
amplitude
speed
When the pitch of a sound is lower, the source must be vibrating
more times per second
less times per second
Sounds that are too high for humans to hear are called ___ and sounds too low for humans to hear are called __________.
infrasonic, ultrasonic
ultrasonic, infrasonic
supersonic, ultrasonic
infrasonic, supersonic
The loudness of a sound is related to its ___.
amplitude
wavelength
frequency
speed
The perceived change in pitch as a sound source moves toward or away from an observer is called the _________.
Doppler Effect
Sound Table Effect
Intensity Transfer Effect
Wave Movement Effect
In the image shown, the boy on side A would hear a ________ pitch and the boy on side B would hear a ______ pitch.
high, actual
low, actual
low, high
high, low
Electromagnetic waves _________. Check all that apply.
Can travel through empty space
Do not need a medium
Travel at a speed of 3.0 x 10^8 m/s
All of the above
What is the relationship between frequency and wavelength?
As frequency increases, wavelength increases
As frequency decreases, wavelength decreases
There is no relationship
As frequency increases, wavelength decreases
As electromagnetic waves increase in frequency, the energy of the wave __________.
increases
decreases
stays the same
Using what you know about the pattern of wavelengths on the electromagnetic spectrum, which color of visible light would have the longest wavelength?
Red
Yellow
Green
Blue
If a mirror is curved inward, that is called a ___ and produces light waves that _________.
plane mirror, diverge
concave mirror, converge
convex mirror, diverge
Which of the following statements describe a real image? (Choose all that apply)
light rays that come together in real space (on a screen)
light rays that come together behind the mirror
the image is inverted
the image is upright
Which of the following statements describe a virtuall image? (Choose all that apply)
light rays that come together in real space (on a screen)
light rays that come together behind the mirror
the image is inverted
the image is upright
The law of reflection states:
The angle of incidence equals the angle of reflection
The angle of incidence is larger than the angle of reflection
The angle of incidence is smaller than the angle or reflection
The angle of incidence and reflection differ based on what surface light hits
What type of mirror obeys the law of reflection?
plane
concave
convex
all mirrors
