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Question

V-I graph of which material shows the straight line?


A

Gallium

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B

Germanium

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C

Silver

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D

Silicon

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Solution

The correct option is C

Silver


The explanation for the correct option:

In the case of option C,

  1. Materials that obey Ohm's law exhibit a straight line in the V-I graph.
  2. Since silver is the only ohmic material among the given options, it exhibits a straight-line curve.
  3. According to Ohm's law, the current flowing through a conductor between two points is proportional to the voltage across the two points.

Therefore, option C is correct.


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