The resistance of a conductor depends on its

Options

A. Material of conductor
B. Length of conductor
C. Area of cross-section of conductor
D. All of these

Answer

To determine how the resistance of a conductor depends on various factors, we can analyze the formula for resistance:

### Step-by-Step Solution:

1. **Understanding the Formula for Resistance**:
The resistance \( R \) of a conductor is given by the formula:
\[ R = \rho \frac{L}{A} \]
where:
- \( R \) = resistance
- \( \rho \) = resistivity of the material
- \( L \) = length of the conductor
- \( A \) = area of cross-section of the conductor

2. **Identifying the Factors**:
From the formula, we can identify the factors that affect resistance:
- **Resistivity (\( \rho \))**: This is a property of the material itself. Different materials have different resistivities, which affect how easily current can flow through them.
- **Length (\( L \))**: The longer the conductor, the greater the resistance. This is because electrons have to travel a longer distance, encountering more collisions with atoms in the material.
- **Area of Cross-Section (\( A \))**: The larger the cross-sectional area, the lower the resistance. A larger area allows more electrons to flow simultaneously, reducing the overall resistance.

3. **Conclusion**:
Therefore, we can conclude that the resistance of a conductor depends on:
- The resistivity of the material (which is a property of the material)
- The length of the conductor
- The area of the cross-section of the conductor

### Final Answer:
The resistance of a conductor depends on its resistivity, length, and area of cross-section.