Question

Which of the given below options is an ohmic conductor?

• A. Germanium
• B. Silicon
• C. Silver
• D. None of these

Answer 1

The correct option is C

Silver

Explanation for correct option

In the case of option C,

1. An ohmic conductor is defined as one which obeys ohm's law that is $\mathrm{V}\propto \mathrm{I}$ where $\mathrm{V}$ is the voltage and $\mathrm{I}$ is the current.
2. There must be a linear $\mathrm{V}-\mathrm{I}$ graph.
3. Silver is an example of an ohmic conductor as the $\mathrm{V}-\mathrm{I}$ graph for silver is a linear graph.
4. Silver and copper are some examples of ohmic conductor.
5. The below-shown graph depicts the difference between ohmic and non-ohmic conductors.

Explanation for incorrect options

In case of option A,

1. Germanium is a semiconductor and we know that semiconductor does not follow ohm's law.
2. Thus, germanium is not an ohmic conductor.
3. Hence, option A is incorrect.

In case of option B,

1. Silicon is also a semiconductor.
2. So it is not an ohmic conductor.
3. Hence, option B is incorrect.

Therefore, option C is the correct answer.