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Resistance, Inductance, and Capacitance Flashcards | StudBud
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Resistance, Inductance, and Capacitance
Resistance, Inductance, and Capacitance
30 terms
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Chapter 29
Flashcards
30 cards
F
Practice quiz
P
Host live
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Questions
30
Answers
1
T/F A capacitor has the ability to store the amount of charge equal to the applied voltage
True
False
2
How do you discharge the energy stored in a capacitor?
Disconnect the power
Increase the plate area
Invite it to leave
Connect a conductor between the plates
3
______ is the ability of a component to store energy in the form of an electrical charge.
Capacitance
Perseverance
Inductance
Resistance
4
The number of turns of wire, spacing between turns, core used, and wire size change the _______
strength of a magnetic field
size of the transformer
color
power
5
What is the current in this circuit?
4 Ohms
12 Volts
0.33 Amps
3 Amps
6
The dielectric in a capacitor may be ________
oil
air
paper
all of these
7
A _______ circuit is a circuit that contains only heating elements or incandescent lamps
resistive
capacative
inductive
solid state
8
What is one way to find the inductance of a coil?
Measure the volts and current flow then do the calculations
Ask your mom.
I can not be determined
I think it has something to do with a witch and a duck
9
A _______ is any device that converts electrical energy to motion, heat, light, or sound
switch
capacitor
load
line
10
What is the inductive resistance of a circuit with a coil connected to 120 VAC & 80mA current?
0.96 Ohms
9600 Ohms
1500 Ohms
I don't know because I didn't read that part of the book.
11
Bonus Question: What chapter were you supposed to read today?
30
27
29
28
12
As the strength of an inductor's magnetic field increases, the inductance ___________
(why do I always lose this game? Maybe I should read)
decreases
remains the same
increases
13
______ is the property of a circuit that causes it to oppose a change in current.
Resistance
Capacitance
Persistence
Inductance
14
A ______ consists of two conductors (plates) separated by an insulator.
coil
resistor
transformer
capacitor
15
T/F All conductors have some resistance
True
False
16
Inductive reactance is an inductor's opposition to alternating current and is measured in _____
Volts
Watts
Ohms
Inducto-meters
17
The unit of capacitance is the __________
volt
ohm
farad
amp
18
Why can't Ohm's law be directly applied to most AC circuits?
They contain multiple types of loads
Ohm's Law only applies to DC
They do not contain resistive loads.
V does not equal I times R
19
What is the difference between and inductor and a transformer?
They are essentially the same thing
Inductors act like a switch
Transformers are smaller
Inductors use one coil, transformers use 2 or more coils.
20
As the temperature in a conductor increases, the resistance _______________
(I wish I would have read this chapter)
decreases
increases
remains the same
21
In a flashlight, what opposed the current flow?
Capactiors
Resistors
Transformer
Lamp
22
What is the impedance of a 120 VAC circuit with 5 mA of current flow
600 Ohms
24,000 Ohms
I forgot my calculator.
14 Ohms
23
Which of these materials has the least amount of resistance?
Iron
A duck
Aluminum
Copper
24
Inductors store ______ charge. Capacitors store ______ charge
capacitor, inductor
AC, DC
resistance, impedance
current, voltage
25
What is the Power in this circuit
12 Volts
36 Watts
0.25 Watts
4 Watts
26
Impedance is measured in _______
amps
ohms
volts
watts
27
What is the airspeed velocity of an unladen swallow?
African or European?
I refuse to play stupid movie trivia games.
About 11 meters per second
About 25 mph
28
What is this formula used for? X
L
= 2πfL?
Calculating current
Finding your shoe size
Calculating capacitance
Determining Inductive Resistance
29
_____ is the total opposition to flow of alternating current
Conductance
Antagonism
Resistance
Impedance
30
Why does a fluorescent light need a ballast?
To control light temperature
To reduce noise
To modulate the inductance
To provide a high voltage starting surge.