Copy machines operate on the principle of static electricity.
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Q14: Bringing a charged test object near the
Q15: The shock that results from walking across
Q16: The precipitator uses a high-voltage DC power
Q17: A precipitator is a type of _.
A)
Q18: Static electricity refers to electrons that _ moving.
A) are
B)
Q20: If a thundercloud has a positive charge,
Q21: Nuisance static charges are more likely to
Q22: The semiconductor material used as a coating
Q23: Power lines are often protected by lightning
Q24: Selenium is a(n) _.
A) conductor
B) insulator
C) semiconductor
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