The self inductance of a coil does not depend upon

Options

A. the diameter of the coil
B. the length of the coil
C. the resistance of the wire of coil
D. the number of turns in the coil

Answer

To determine what the self-inductance of a coil does not depend upon, we need to analyze the factors that influence self-inductance.

### Step-by-Step Solution:

1. **Understanding Self-Inductance**:
Self-inductance (L) is a property of a coil that quantifies its ability to induce an electromotive force (EMF) in itself due to a change in current.

2. **Factors Affecting Self-Inductance**:
- **Geometric Properties**: The self-inductance depends on the physical dimensions of the coil, such as its length and diameter. A larger diameter or longer coil generally results in a higher inductance.
- **Number of Turns (n)**: The self-inductance is directly proportional to the number of turns in the coil. More turns mean more magnetic flux linkage, which increases inductance.

3. **Magnetic Field and Current**:
The magnetic field (B) produced by the current (I) in the coil is also a factor. The self-inductance is related to how the magnetic field interacts with the coil's turns.

4. **Resistance**:
Self-inductance does not depend on the resistance of the coil. While resistance affects the current flow and energy loss in the coil, it does not influence the inductance itself.

5. **Conclusion**:
Based on the analysis, the self-inductance of a coil does not depend on resistance.

### Final Answer:
The self-inductance of a coil does not depend upon its resistance.

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