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What is the shape of the I/V graph for a filament lamp?
3 years ago
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3 Replies
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Aracely Ratke
3 Answers
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Starts at 0,0 then curve with a positive gradient, whose gradient decreases and the I and V increase.
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It looks like this!
You don't strictly need the negative quadrants, but there's nothing to stop you applying a negative voltage to a filament lamp, it would just drive the current in the opposite direction, so the graph is rotationally symmetrical.
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