A toroid consists of a coil wrapped around with 4 layers of windings of 300 turns each. The inner and outer radius of toroid are 10 cm and 15 cm, respectively. Il the coil carries a current of 15 A, find the maximum and minimum values of the magnetic field within the toroid.

Explanation

To solve the problem of finding the maximum and minimum magnetic field within a toroid, we can follow these steps:

### Step 1: Understand the given data
- Inner radius \( r_1 = 10 \, \text{cm} = 0.1 \, \text{m} \)
- Outer radius \( r_2 = 15 \, \text{cm} = 0.15 \, \text{m} \)
- Number of turns per layer = 300
- Number of layers = 4
- Total number of turns \( N = 300 \times 4 = 1200 \)
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