A solenoid of 2m long & 3cm diameter has 5 layers of winding of 500 turns per metre length in each layer & carries a current of 5A. Find intensity of magnetic field at the centre of the solenoid.

Explanation

To find the intensity of the magnetic field at the center of the solenoid, we can follow these steps:

### Step 1: Identify the parameters of the solenoid
- Length of the solenoid (L) = 2 m
- Diameter of the solenoid = 3 cm (which is not needed for the calculation of the magnetic field)
- Number of layers of winding = 5
- Number of turns per meter in each layer (n) = 500 turns/m
- Current (I) = 5 A
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