If the magnetic flux linked with the system is one unit when one ampere current passes through it , the self- inductance of the system is ............. .

Explanation

To solve the problem, we need to understand the relationship between magnetic flux (Φ), current (I), and self-inductance (L). The self-inductance can be defined as the ratio of the magnetic flux linked with the system to the current flowing through it.

### Step-by-Step Solution:

1. **Understand the relationship**: The self-inductance (L) is defined as the magnetic flux (Φ) linked with the system per unit current (I). The formula is given by:
\[ L = \frac{\Phi}{I} \]
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