Magnetic susceptibility of platinum is 0.0001. Its relative permeability is :

Options

A. `1.0000`
B. 0.9999
C. 1.0001
D. 0

Explanation

To find the relative permeability (μr) of platinum given its magnetic susceptibility (χm), we can use the following relationship:

### Step-by-Step Solution:

1. **Identify the given values**:
- Magnetic susceptibility (χm) of platinum = 0.0001.

2. **Recall the formula for relative permeability**:
- The relationship between magnetic susceptibility (χm) and relative permeability (μr) is given by:
\[ μ_r = 1 + χ_m \]

3. **Substitute the value of χm into the formula**:
- Plugging in the value of χm:
\[ μ_r = 1 + 0.0001 \]

4. **Perform the calculation**:
- Adding the values:
\[ μ_r = 1 + 0.0001 = 1.0001 \]

5. **State the final answer**:
- Therefore, the relative permeability (μr) of platinum is:
\[ μ_r = 1.0001 \]

### Final Answer:
The relative permeability of platinum is **1.0001**.