12354072
Descrição
Quiz por Kris Salmons, atualizado more than 1 year ago
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Criado por Kris Salmons
quase 7 anos atrás
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|
Questão 1
Questão
The most commonly accepted theory regarding electricity says that an electric current is a flow of ___________ through a conductor.
Responda
-
Protons
-
Electrons
-
Neutrons
Questão 2
Questão
The unit of measurement for:
... electrical current is [blank_start]Ampere[blank_end].
... resistance against current flow is [blank_start]Ohm[blank_end].
... electrical force, or pressure, is [blank_start]Volt[blank_end].
... electrical power, or energy used, is [blank_start]Watt[blank_end].
Responda
-
Ampere
-
Farad
-
Ohm
-
Volt
-
Henry
-
Watt
-
Hertz
Questão 3
Questão
All materials give at least some amount of resistance to the flow of electricity. However, the resistance given by some metals is very small and we say that these metals are good ______________.
Responda
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Insulators
-
Semiconductors
-
Conductors
Questão 4
Questão
There is a mathematical relationship between the voltage, the current, and the resistance in an electrical circuit. This relationship is called _____________'s Law.
Responda
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Lenz
-
Ohm
-
Tesla
Questão 5
Questão
Choose the correct prefix to make this statement true: 1,500,000 V = 1.5 ___ V.
Responda
-
m
-
k
-
M
-
µ
Questão 6
Questão
Choose the correct prefix to make this statement true: 0.003 A = 3.0 ___A.
Responda
-
m
-
k
-
M
-
µ
Questão 7
Questão
Choose the correct prefix to make this statement true: 2,200 Ω = 2.2 ___Ω.
Responda
-
m
-
k
-
M
-
µ
Questão 8
Questão
Name the component represented by this schematic symbol shown.
Image:
Q9fig (binary/octet-stream)
Responda
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Battery
-
Fuse
-
Diode
-
Resistor
Questão 9
Questão
Name the component represented by the schematic symbol shown.
Image:
Q10fig (binary/octet-stream)
Responda
-
Ground
-
Battery
-
Fuse
-
Resistor
Questão 10
Questão
Ohm's Law is: _________ = ____________ x _____________
Responda
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E = I x R
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R = E x I
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I = R x E
Questão 11
Questão
How many ohms are equal to 20 kΩ?
Responda
-
2,000
-
20,000
-
200,000
-
2,000,000
Questão 12
Questão
Energy that is being stored for possible use is technically, or scientifically, known as _____________ energy.
Responda
-
Potential
-
Kinetic
-
Quantum
Questão 13
Questão
In electricity, power in Watts is equal to current times _____________.
Responda
-
Voltage
-
Resistance
-
Power
Questão 14
Questão
A series circuit has _____________ path(s) for current to follow.
Responda
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No
-
One
-
Many
Questão 15
Questão
If current is measured in two different parts of a series circuit, the two measurements will be _____________.
Responda
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Slightly different
-
The same
-
Very different
Questão 16
Questão
In a series circuit consisting of one voltage source and three resistors, the sum of all the voltage drops across the three resistors will be equal to ____________.
Responda
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100 times the source voltage
-
The source voltage
-
3 times the source voltage
-
Negative source voltage
Questão 17
Questão
In a series circuit consisting of one voltage source and three resistors, if the resistance of one of the resistors is increased, the voltage drop across it will _______________.
Responda
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Increase
-
Decrease
-
Stays the same
Questão 18
Questão
In a series circuit consisting of one voltage source and two resistors, if the values of the resistors are equal, we can assume that their voltage drops will be _______________.
Responda
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Different
-
The same
-
Unable to be determined from the information given
Questão 19
Questão
The metric value 16 mA can be expressed as _______________.
Responda
-
Image:Q20b (binary/octet-stream)
-
Image:Q20c (binary/octet-stream)
-
Image:Q20d (binary/octet-stream)
-
Image:Q20a (binary/octet-stream)
Questão 20
Questão
86,000 expressed in scientific notation equals ____________.
Responda
-
Image:Q21a (binary/octet-stream)
-
Image:Q21b (binary/octet-stream)
-
Image:Q21c (binary/octet-stream)
-
Image:Q21d (binary/octet-stream)
Questão 21
Responda
-
True
-
False
Questão 22
Questão
Mega is what relation to kilo?
Responda
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10 times
-
100 times
-
1000 times
-
1,000,000 times
Questão 23
Questão
Scientific notation is the most widely used form of technical notation in electronics.
Responda
-
True
-
False
Questão 24
Questão
The metric prefix µ is normally associated with ______________ measurements.
Responda
-
extremely small
-
small
-
large
-
extremely large
Questão 25
Questão
Resistance is the opposition to electrical current.
Responda
-
True
-
False
Questão 26
Questão
A 100 kΩ +/- 10% resistor is color coded ___________________.
Responda
-
brown, green, black, gold
-
brown, black, yellow, silver
-
brown, black, yellow, gold
-
black, brown, yellow, silver
Questão 27
Questão
Which type of resistor is used for high-power applications?
Responda
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wire wound
-
carbon composition
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surface mount
-
film
Questão 28
Questão
In the American Wire Gauge sizes, as the numerical value of AWG goes higher, the cross-sectional area of the wire _______________.
Responda
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goes higher
-
goes lower
-
stays the same
Questão 29
Questão
A 250 µA current flowing through a 4.7 kΩ resistor produces a _____________ voltage drop.
Responda
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18.8 V
-
53.2 V
-
1.175 V
-
1.175 mV
Questão 30
Questão
If 12 kΩ resistor carries the current of 12 mA, the resistor voltage drop is 1 V.
Responda
-
True
-
False
Questão 31
Questão
Power rating for a resistor is mainly based on the physical size.
Responda
-
True
-
False
Questão 32
Questão
If the voltage were suddenly switched on in the figure shown, ____________________.
Image:
Q33fig (binary/octet-stream)
Responda
-
the current would be zero
-
the current would flow
-
the current would gradually decrease
-
the current would gradually decrease and then increase
Questão 33
Questão
If a 60 Ω resistor carries the current of 12 mA, what's the voltage drop?
Responda
-
0.72 volts
-
7.2 volts
-
720 volts
-
72 volts
Questão 34
Questão
A 47 MΩ +/- 10% resistor is color coded ____________________.
Responda
-
violet, blue, silver, gold
-
yellow, violet, blue, silver
-
yellow, violet, green, silver
-
yellow, violet, blue, gold
Questão 35
Questão
If a resistor of 2.2 MΩ is connected across a 1 kV source, current equals about ____________.
Responda
-
2.2 mA
-
0.455 A
-
45.5 µA
-
0.455 mA
Questão 36
Questão
At constant voltage, resistance and current are ______________.
Responda
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directly proportional
-
similar to voltage
-
unrelated
-
inversely proportional
Questão 37
Questão
Which of the following terms is not a resistor rating?
Responda
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current
-
resistor tolerance
-
power rating
-
resistor value in ohms
Questão 38
Questão
If I = 27 mA and R = 4.7 Ω in the figure shown, the voltage equals _________________.
Image:
Q39fig (binary/octet-stream)
Responda
-
174 mV
-
5.74 V
-
127 mV
-
7.8 V
Questão 39
Questão
If 12 V and 17 V sources are wired in series aiding, what is the total supply voltage?
Responda
-
29 V
-
12 V
-
17 V
-
5 V
Questão 40
Questão
Three resistors are connected in series with a 60 V source. If VR1 = 19 V and VR2 = 14.3 V then what is the voltage drop across R3?
Responda
-
19 V
-
26.7 V
-
14.3 V
-
45.7 V
Questão 41
Questão
A 15 kΩ +/- 5% resistor is color coded ___________.
Responda
-
black, brown, yellow, silver
-
brown, black, yellow, silver
-
brown, black, yellow, gold
-
brown, green, orange, gold
Questão 42
Questão
If a 68 Ω, 33 Ω, 100 Ω, and 47 Ω resistor are connected in series with a 9 V battery supply, the current equals ____________.
Responda
-
327 mA
-
22.3 mA
-
36.3 mA
-
27.6 A
Questão 43
Questão
If a 4.7 kΩ, a 5.6 kΩ, and a 10 kΩ resistor are in series, which resistor drops the most voltage?
Responda
-
The 5.6 kΩ resistor
-
The 4.7 kΩ resistor
-
The 10 kΩ resistor
-
Cannot be determined from the given information
Questão 44
Questão
The voltage drop across any resistor or combination of resistors in a series circuit equals:
Responda
-
the applied voltage across all resistors
-
the product of the circuit current times the resistance value
-
the ratio of the resistance values times the source voltage
-
all of the above
Questão 45
Questão
If 5 V and 16 V power supplies are connected in series aiding, what is the total voltage?
Responda
-
80 V
-
16 V
-
21 V
-
24 V
Questão 46
Questão
If there is 100 mA of current flowing into a three-branch parallel circuit and two of the branch currents are 40 mA and 20 mA, the third branch current is _______________.
Responda
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40 mA
-
60 mA
-
160 mA
-
20 mA
Questão 47
Questão
If currents 5 A and 3 A enter a junction from two separate paths, how much current flows out of the junction?
Responda
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8 A
-
3 A
-
2 A
-
5 A
Questão 48
Questão
An open fault in one branch of a parallel circuit results in:
Responda
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increased circuit resistance
-
decreased power consumption
-
decreased current flow
-
all of these
Questão 49
Questão
If a 4.7 kΩ resistor and a 2.2 kΩ resistor are connected in parallel, the total resistance is ______________.
Responda
-
2200 Ω
-
4700 Ω
-
greater than 2200 Ω
-
less than 2200 Ω
Questão 50
Questão
The total resistance of three parallel resistors equals the sum of the individual resistor values.
Responda
-
True
-
False
Questão 51
Responda
-
(a)
-
(b)
-
(c)
-
(d)
-
(e)
Questão 52
Questão
Using the circuit shown, calculate the voltage drop across each resistor and the total circuit current.
Round your answers to three significant figures.
Image:
Q53 (binary/octet-stream)
Responda
-
1.80
-
3.24
-
6.72
-
.012
Questão 53
Questão
Using the circuit in the figure shown, calculate each branch current, total circuit current, and the voltage drop across R3.
Round your answers to three significant figures.
Image:
Q54fig (binary/octet-stream)
Responda
-
.133
-
.074
-
.036
-
20
-
.243
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