Show graphically the variation of magnetic field due to a straight conductor of uniform cross-section or radius ‘a’ and carrying steady currently as a function of distance r (a > r) from the axis of the conductor.

Explanation

To show graphically the variation of the magnetic field due to a straight conductor of uniform cross-section (radius ‘a’) carrying a steady current as a function of distance ‘r’ from the axis of the conductor (where a > r), we can break down the solution into several steps:

### Step-by-Step Solution:

1. **Understanding the Setup**:
- We have a straight conductor with a uniform cross-section and radius ‘a’ carrying a steady current ‘I’.
- We need to analyze the magnetic field at different distances ‘r’ from the center of the conductor.

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