Physics
Grade-9
Easy
Question
Look at the following graph:
Which statement is false about the graph?
- It shows the effect of an increase in temperature on a conductor
- Increase of resistance is plotted against temperature.
- It is a linear graph
- Graph is unpredictable.
Hint:
Resistance of a conductor depends on the temperature.
The correct answer is: Graph is unpredictable.
- The graph shown in the above question is predictable because when the temperature increases, the resistance of the conductor also increases.
- It is because, when heat flow in the conductors increases the movement of free ions and radicles present in the conductor also increases which in turn will increase the resistance of the conductor.
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