Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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To find the total resistance in a series circuit, _______________.
a. | multiply the individual resistances | c. | add the individual
resistances | b. | average the resistances | d. | subtract the individual resistances |
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2.
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Which is not an application of Ohm’s Law?
a. | Troubleshooting circuits | d. | all of the
above | b. | Sizing components | e. | none of the above | c. | Creating multiple voltage
levels |
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3.
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The Ohm’s Law formula for calculating voltage is _______________.
a. | E = I x R | d. | All of the above | b. | E = P x R | e. | None of the above | c. | E = P x I x
R |
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4.
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Kirchhoff’s Voltage Law for a series circuit says that the total voltage
is equal to _______.
a. | the smallest voltage drop | c. | the product of the voltage
drops | b. | the sum of the voltage drops | d. | the largest voltage
drop |
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5.
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The measure of energy consumed by a circuit is called ______________.
a. | usage | c. | dissipation | b. | power | d. | consumption |
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6.
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Which of the following is a formula for calculating power?
a. | P = I x E | d. | All of the above | b. | P = I x R | e. | None of the above | c. | P = E /
R |
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7.
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The current that flows from and back to the power supply in a parallel circuit
is called __________ current.
a. | maximum | c. | Kirchhoff’s | b. | main line | d. | minimum |
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8.
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Which of the following is a formula for calculating total resistance in a
parallel circuit?
a. |  | d. | All of the
above | b. |  ... | e. | None of the above | c. |  ... |
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9.
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Which of the following is a type of circuit protection device?
a. | Fuse | c. | Rheostat | b. | Resister | d. | Capacitor |
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10.
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When the wire or foil strip inside a fuse melts, the fuse is said to be
___________.
a. | shot | c. | blown | b. | done | d. | tripped |
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11.
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The difference between a fuse and a circuit breaker is ________________.
a. | circuit breakers are cheaper | d. | All of the
above | b. | circuit breakers can be reset and used again | e. | None of the above | c. | fuses are
re-usable |
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Matching
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Segment 1
a. | Kirchhoff’s | d. | E = I x
R | b. | current | e. | resistance | c. | Ohm’s |
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12.
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________ Law states that one volt can push one amp through one ohm of
resistance.
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13.
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________ Voltage Law states that the total voltage in a series circuit is equal
to the sum of the individual voltage drops in the circuit.
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14.
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The mathematical statement of Ohm’s Law is _________.
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15.
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One way to calculate total power used in a series circuit is to multiply the
total voltage and total __________.
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16.
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The total ________ in a circuit determines how much power the circuit will
draw.
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Segment 2
a. | decreases | d. | main
line | b. | equal | e. | increase | c. | sum |
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17.
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The ________ current is the total current in a parallel circuit.
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18.
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Kirchhoff’s Current Law says that the amount of current flowing from the
source is always __________ to the current flowing back to the source.
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19.
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The total resistance of a parallel circuit _________ (increases/decreases) as
mor resistors are added in parallel.
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20.
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Each time another branch is added to a circuit, it will _______
(increase/decrease) the load on the power supply.
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21.
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Kirchhoff’s Current Law says that the main line current will be equal to
the __________ of the currents in the branches.
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Segment 3
a. | temperature | e. | short
circuit | b. | reset | f. | continuity | c. | circuit breakers | g. | surge | d. | blow | h. | fuse |
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22.
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A(n) __________ consists of a conductive wire or metal foil strip encased in a
glass tube.
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23.
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When the current flow exceeds the rated value of the fuse, the fuse will
________.
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24.
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If a fuse is blown, there is no longer _________.
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25.
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The difference between a fuse and a circuit breaker is that a circuit breaker
can be ________ and used again, while a fuse cannot.
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26.
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A thermally-triggered circuit breaker will have a delay time before it trips
because the ________ must build up.
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27.
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A magnetically-triggered circuit breaker will trip immediately when a(n)
________ of excessive current is present.
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28.
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Most newer homes and businesses use _________ in their electrical control
panels.
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29.
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A(n) __________ occurs when there is a direct path with little or no resistance
created between the positive and negative terminals of a power supply.
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