PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current
Problem
An ideal transformer has Np=800 turns and Ns=40 turns. The primary is connected to a 220V (rms) supply and draws a current of 0.25A. What is the rms current in the secondary coil?
(a) 0.50A
(b) 5A
(c) 0.0125A
(d) 1.25A