Magnetic resonance imaging needs a magnetic field strength o

Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 2.00-mm-diameter superconducting wire Part A What cufront is needed?

Solution

The magnetic eld due to a solenoid is

B = µ0 N I / L

Number if turns:

N = 1.8/0.002 = 900 turns

-----------------------------------------

I = BL / µ0 N

I= (1.5 * 1.8) / (4 * 10-7 * 900)

I = 2388.889 A