A single-phase ideal transformer is connected to a (rms) domestic mains supply
PHYSICS · Multi-part · CBSE · Physics · Alternating Current · Alternating Current
Problem
A single-phase ideal transformer is connected to a 220V (rms) domestic mains supply. The primary winding has Np=500 turns, while the secondary winding has Ns=50 turns. Answer the following:
(i) Calculate the rms secondary voltage.
(ii) A purely resistive load of 4Ω is connected across the secondary. Find the rms secondary current.
(iii) Determine the rms primary current.
(iv) State whether this transformer is step-up or step-down and justify your answer using appropriate numerical evidence.