Consider a solenoid or a toroidal iron ring having a magnetic p turns carrying I amperes wound anywhere on it as in Fig. Flux The field strength inside the solenoid is given as, H = 4 B=H=Wb/m Total flux produced (6) is given as $=8x A BMNIA Wb/m Calculation: Given that $ = 1.75 10'3 -8-/A-1.75 103/(x (3.5)2 x 10^-4) = 0.4547 T 0.4547 - 4-107-900-606/ 2x15x10 3 -1-0.147 A=0.15 A