Question -
Answer -
Length of the solenoid, l =80 cm = 0.8 m
There are five layers of windingsof 400 turns each on the solenoid.
Total number of turns on thesolenoid, N = 5 × 400 = 2000
Diameter of the solenoid, D =1.8 cm = 0.018 m
Current carried by thesolenoid, I = 8.0 A
Magnitudeof the magnetic field inside the solenoid near its centre is given by therelation,Where,
= Permeability of freespace = 4π × 10–7 T m A–1
Hence, the magnitude of themagnetic field inside the solenoid near its centre is 2.512 × 10–2 T.