The Value of resistance does not depend upon ?

Options

A. Potential Difference.
B. Nature of the Material
C. Dimensions
D. Temperature

Explanation

To solve the question regarding what the value of resistance does not depend on, we can analyze the options provided based on the fundamental concepts of resistance in physics.

### Step-by-Step Solution:

1. **Understanding Resistance**:
Resistance (R) is defined as the opposition to the flow of electric current in a conductor. It is given by the formula:
\[ R = \frac{\rho L}{A} \]
where:
- \( R \) = resistance
- \( \rho \) = resistivity (specific resistance) of the material
- \( L \) = length of the conductor
- \( A \) = cross-sectional area of the conductor

2. **Analyzing the Options**:
- **Potential Difference**: This is the voltage across the conductor. According to Ohm's Law, while the current through a resistor changes with potential difference, the resistance itself remains constant for a given material and dimensions. Thus, resistance does not depend on potential difference.
- **Nature of the Material**: The resistivity (\( \rho \)) is a property that depends on the material itself. Different materials have different resistivities, which directly affects resistance. Therefore, resistance does depend on the nature of the material.
- **Dimensions**: The resistance is directly proportional to the length (\( L \)) and inversely proportional to the cross-sectional area (\( A \)). Therefore, resistance does depend on the dimensions of the conductor.
- **Temperature**: Resistance is also affected by temperature. Generally, as temperature increases, the resistance of most conductors increases as well. Therefore, resistance does depend on temperature.

3. **Conclusion**:
From the analysis above, we can conclude that the value of resistance does not depend on potential difference.

### Final Answer:
The value of resistance does not depend on **potential difference**.