What are the factors on which coefficient of mutual inductance of two coils depends?

Explanation

To determine the factors on which the coefficient of mutual inductance (M) of two coils depends, we can follow these steps:

### Step 1: Understanding Mutual Inductance
Mutual inductance is a measure of the ability of one coil to induce an electromotive force (EMF) in another coil when the current in the first coil changes.

### Step 2: Identify the Coils
Consider two coils:
- Coil 1 (Primary Coil)
...