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Which type of nerves carry messages to the brain and spinal cord?
Which type of nerves carry messages from the brain to the muscles?
A material that does not allow the flow of electric current is called a(n):
Which of the following materials is NOT a good conductor of electricity?
More electrical current flowing through a line than it is designed to carry is called a(n):
c. spark gap
d. power box
Which of the following currents is the only constant direct current of low voltage and high
amperage that produces an electrochemical effect?
39. What type of light normally produces "red" tones or "warm" casts and is produced by the ordinary
40. Which form of light can produce positive or negative effects to the skin based on exposure time?
c. visible light
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p350 - Final Test