The relative permeability of iron is 6000. Its magnetic susceptibility is

Options

A. 5999
B. 6001
C. `6000xx10^(-7)`
D. `6000xx10^(7)`

Explanation

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

### Step-by-Step Solution:

1. **Understand the Relationship**: The relationship between magnetic susceptibility (χm) and relative permeability (μr) is given by the formula:
\[ \chi_m = \mu_r - 1 \]

2. **Substitute the Given Value**: We know that the relative permeability of iron (μr) is 6000. Substitute this value into the formula:
\[ \chi_m = 6000 - 1 \]

3. **Perform the Calculation**: Now, perform the subtraction:
\[ \chi_m = 5999 \]

4. **State the Final Answer**: Therefore, the magnetic susceptibility of iron is:
\[ \chi_m = 5999 \]

### Final Answer:
The magnetic susceptibility of iron is 5999.

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