A heater is rated at 1200 watts for a 120-volt source.
-Why is most matter electrically neutral?
A) It contains no charges.
B) There are equal amounts of positive and negative charges present.
C) The charge on the electrons and protons in the material is too small to notice.
D) none of the above
Correct Answer:
Verified
Q93: If you have 7 total 100-W light
Q94: Ohmic heating is
A)always undesirable.
B)used in light bulbs.
C)what
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Q99: A battery supplies
A)AC current.
B)DC current.
C)resistance.
D)voltage.
E)positive ions.
Q100: The electric field shown is produced by
Q101: The type of current supplied by a
Q102: Superconductivity is lost when a certain _
Q103: The current drawn by the heater is
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