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Answer to Question #8738 in Electric Circuits for shankar jasak

Question #8738
for...............the graph of currunt and voltage is not a straight line and value of resistance is not constant?
Expert's answer
For example, when we plot current vs. voltage for a filament (rather than a fluorescent) bulb& we get a curve. The fact that the voltage vs. current graph is curved rather than
a& straight& line shows that the resistance changes with changing current.

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