Foundation
Physics Foundation
Ohms Law and Resistance
Question
A V - I graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtain such a graph.
Refer above image.
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Solution
The V - I graph of the nichrome wire shows a straight line. It means that the resistance of the wire remains constant when the current supply is changed. It follows the ohm's law and therefore, it is considered as an ohmic conductor. It follows ohm's law
→ V = IR
which shows that the slope of graph is a constant.
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