An iron ring has a mean diameter of 0.1 m and a cross-section of 33.5 × 10 − 6 m2. It is wound with a magnetising winding of 320 turns and the secondary winding of 220 turns. On reversing a current of 10 A in the magnetising winding, a ballistic galva
” An iron ring has a mean diameter of 0.1 m and a cross-section of 33.5 × 10 − 6 m2. It is wound with a magnetising winding of 320 turns and the secondary winding of 220 turns. On reversing…