A transformer has 400 turns and 200 turns in the primary and secondary windings respectively. If the current in the primary and secondary windings are 3A and 5A respectively. calculate the efficiency of the transformer? by Sunday | May 22 | Physics WAEC | 0 comments A. 85.0% B. 83.3% C. 37.5% D. 30.0% Correct Answer: Option B B. 83.3% Users Also Read These:A transformer has 400 turns of wire in the primary…The primary of a transformer has 100 turns and its…Purchase account is overcast by ₦200, while wages…A transformer with 5500 turns in its primary winding…A transformer is required to supply 12 Vrms to…