what is the strength of the magnetic field 1 cm below a coil

what is the strength of the magnetic field 1 cm below a coil 5 cm in diameter with a current of 50 amps and a voltage of 35 volts?

Solution

magnetic field strength=T/(N/A²) = (N/Am)/(N/A²) = A/m

H = B₀/₀ = B/₀ - M ,

B = ₀(H + M),

B = _mH

where

= _m = K_m0,

Magnetic susceptibility _m = K_m - 1,

An older unit for magnetic field strength is the oersted: 1 A/m = 0.01257 oersted.

\"magnetic field strength\" designated by H,

quantity M in these relationships is called the magnetization of the material.

₀ being the magnetic permeability of space and K_m the relative permeability of the material. If the material does not respond to the external magnetic field by producing any magnetization, then K_m = 1. Another commonly used magnetic quantity is the magnetic susceptibility which specifies how much the relative permeability differs from one.

we jst need to substitute the given values in the question and get final answer.