The Current in the Secondary Coil of a Step-Up Transformer

Multiple Choice

The current in the secondary coil of a step-up transformer is 1.25 A when the current in the primary coil is 0.30 A.Determine the turns ratio,N_s/N_p,of the transformer.

A) 5.6
B) 4.2
C) 0.24
D) 0.18
E) 0.12