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प्रश्न
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.
उत्तर
The graph between V & I is a straight line.
So we can conclude that Current flowing through the wire is directly proportional to the potential difference V across it.
The resistance of the wire can be calculated as
`"R" = "v"/1 = 0.4/0.1 = 4Ω`
We can also conclude that nichrome wire has a constant value of the resistance as 4 Ω4 Ω.
nichrome wire follows ohm's law thus it behaves as an ohmic conductor.
The circuit diagram corresponding to the above graph is as shown below.
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संबंधित प्रश्न
The values of current (I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are as given below:
| V (volts) | 0.5 | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 |
| I (amperes) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.8 | 1.0 |
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| Current, I (in amperes) | : | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
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