What is a non-ohmic resistor ?

Explanation

### 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 remains constant. This relationship can be expressed as:
\[ V = I \times R \]
- Here, R is the resistance, which is a constant for ohmic materials.
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