Question

A 8.0-cm long solenoid has 2000 turns of wire and carries a current of 5.0-A. Calculate the strength of the magnetic field at the center of the solenoid in teslas.

Answer 1

B = 0.157 T

Step-by-step explanation:

Given that,

Length of the solenoid, l = 8 cm = 0.08 m

Number of turns in the wire, N = 2000

Current, I = 5 A

We need to find the strength of the magnetic field at the center of the solenoid. It is given by the formula as follows :

`N=\mu_o nI`, N is number of turns per unit length of solenoid.

So,

`B=4\pi * 10^(-7)* (2000)/(0.08)* 5\\\\=0.157\ T`

So, the magnetic field at the center of the solenoid is 0.157 T.