Q - A cast iron toroid of mean length 200 mm is wound with a 4000 turn coil, through which a magnetising current of 0.25A is passed. Calculate the magnetic field strength of the circuit
ok i cannot find anything on this and im stuck , i asked for help but get no reply from online tutors .
does anyone have a equation for this please .
ok i cannot find anything on this and im stuck , i asked for help but get no reply from online tutors .
does anyone have a equation for this please .