Question

g 1. To see why an MRI utilizes iron to increase the magnetic field created by a coil, calculate the current needed in a 400-loop-per-meter circular coil 0.660 m in radius to create a 1.20-T field (typical of an MRI instrument) at its center with no iron present. The magnetic field of a proton is approximately like that of a circular current loop in radius carrying . What is the field at the

Answer 1

I = 2387.32 A

Step-by-step explanation:

Given that,

Number of turns in the loop, N = 400

The radius of the circular coil, r = 0.66 m

The magnetic field inside the MRI, B = 1.2 T

We need to find the current in the loop. The magnetic field inside the solenoid is given by :

`B=\mu_o NI\\\\I=(B)/(\mu_o N)\\\\I=(1.2)/(4\pi * 10^(-7)* 400)\\\\I=2387.32\ A`

So, the required current is equal to 2387.32 A.