When a light switch is turned on, the light comes on immediately because(a) the electrons coming from the power source movethrough the initially empty wires very fast.(b) the electrons already in the wire are instantly “pushed”by a voltage difference.(c) the lightbulb may be old with low resistance. It wouldtake longer if the bulb were new and had highresistance.(d) the electricity bill is paid. The electric company canmake it take longer when the bill is unpaid.
When a light switch is turned on, the light comes on immediately because(a) the electrons coming from the power source movethrough the initially empty wires very fast.(b) the electrons already in the wire are instantly “pushed”by a voltage difference.(c) the lightbulb may be old with low resistance. It wouldtake longer if the bulb were new and had highresistance.(d) the electricity bill is paid. The electric company canmake it take longer when the bill is unpaid.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter21: Current And Direct Current Circuits
Section: Chapter Questions
Problem 28P
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Question
When a light switch is turned on, the light comes on immediately because
(a) the electrons coming from the power source move
through the initially empty wires very fast.
(b) the electrons already in the wire are instantly “pushed”
by a voltage difference.
(c) the lightbulb may be old with low resistance. It would
take longer if the bulb were new and had high
resistance.
(d) the electricity bill is paid. The electric company can
make it take longer when the bill is unpaid.
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