If the number of turns is 1000 per
metre, calculate (a) H, (b) M, (c) B and (d) the magnetising current Im Rationalised 2023-24
147
Magnetism and
Matter
 EXAMPLE 5 5
Solution
(a) The field H is dependent of the material of the core, and is
H = nI = 1000 × 2 0 = 2 ×103 A/m