A magnetic field strength `(H) 3xx10^(3) Am^(-1)` produces a magnetic field of induction `(B)` of `12piT` in an iron rod. Find the relative permeability of iron ?

Explanation

To find the relative permeability of iron given the magnetic field strength \( H \) and the magnetic field induction \( B \), we can follow these steps:

### Step 1: Write down the given values
- Magnetic field strength \( H = 3 \times 10^3 \, \text{A/m} \)
- Magnetic field induction \( B = 12\pi \, \text{T} \)

### Step 2: Calculate the permeability of iron
The permeability \( \mu \) of a material is given by the formula:
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