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State the physical condition in which Oh...

State the physical condition in which Ohm.s law is not valid for a conductor.

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**Step-by-Step Solution:** 1. **Understanding Ohm's Law**: Ohm's Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points, provided the temperature and other physical conditions remain constant. This relationship can be expressed as: \[ V = I \cdot R \] where R is the resistance. ...
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