Which one of the following materials has more than one value for voltage for the same current
1.copper. 2. Mercury. 3 . Gallium Arsenide 4. Germanium.
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The material that has more than one value for voltge for the same current is Germanium.
Explanation:
- The non-ohmic materials do not follow ohm’s law, that means the resistance of the conductor varies on sharing current, voltage and temperature.
- In the non-ohmic materials, the current and voltage are not directly proportional to one another, that is, current and voltage have a non-linear relationship between them.
- Semiconductors and insulators are non Ohmic substances. Devices like diode, transistor is made of semiconductors like silicon, germanium and they don’t follow the Ohm’ Law.
- Germanium is the answer
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