Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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____ is a form of energy that produces magnetic, chemical, or thermal effects
while in motion.
a. | Gas | c. | Proton | b. | Electricity | d. | Ionism |
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2.
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An example of a conductor is ____.
a. | metal | c. | the human body | b. | carbon | d. | All answers are
correct. |
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3.
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An electric ____ is composed of a conductor and an insulator.
a. | switch | c. | plug | b. | metal | d. | wire |
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4.
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The current in a circuit can be controlled with an adjustable ____ called a
rheostat.
a. | resistor | c. | converter | b. | conductor | d. | rectifier |
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5.
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A ____ is a device that changes alternating current to direct current.
a. | rectifier | c. | rheostat | b. | converter | d. | circuit breaker |
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6.
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A ____ is a device that prevents too much current from passing through a
circuit.
a. | timer | c. | converter | b. | fuse | d. | rectifier |
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7.
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The function of a ____ is to shut off an electric circuit at the first sign of
overload.
a. | volt | c. | meter | b. | rectifier | d. | circuit breaker |
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8.
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All electrical appliances must have ____ electrical connections.
a. | exactly one | c. | three | b. | at least two | d. | several |
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9.
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The ____ applicators that direct electric current from a machine to a
client’s skin are called electrodes.
a. | carbon | c. | metal | b. | glass | d. | All answers are
correct. |
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10.
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In electrotherapy, the ____ is the positive pole.
a. | black pole | c. | anode | b. | minus sign | d. | “N” |
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11.
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The ____ modality, which produces chemical changes when passed through tissues
and fluids, is the galvanic current.
a. | most dangerous | c. | most commonly used | b. | hottest | d. | least commonly
used |
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12.
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The ____ current produces heat.
a. | Tesla | c. | alternating | b. | high-voltage | d. | All answers are
correct. |
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13.
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About ____percent of natural sunlight is made up of visible light.
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14.
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UV rays are used in tanning booths and ____ the skin tissue.
a. | remove germs from | c. | are completely safe for | b. | produce a cooling
effect on | d. | penetrate deeply
into |
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15.
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____ rays are destructive to bacteria, as well as to skin tissue if the skin is
exposed to them for too long a period of time.
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16.
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____ rays are pure heat rays.
a. | Ultraviolet | c. | Red | b. | Infrared | d. | Visible |
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