The self inductance of an inductance coil having 100 turns is 20 mH. Calculate the magnetic flux through the cross section of the coil corresponding to a current of 4 milliampere. Also, find the total flux

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the given data
- Self-inductance (L) = 20 mH = 20 × 10⁻³ H
- Number of turns (N) = 100
- Current (I) = 4 mA = 4 × 10⁻³ A

### Step 2: Calculate the magnetic flux (Φ) through the cross-section of the coil
...