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Question

What is the shape of the I/V graph for a filament lamp?

2 years ago

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3 Replies

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2696 views

A

Aracely Ratke


3 Answers

James H Profile Picture
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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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Tom C Profile Picture
Tom C Verified Sherpa Tutor ✓

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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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A
ANSHUL PANWAR

It is always a straight line.

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