Q. In a transformer, the number of turns in primary coil and secondary coil are 5 and 4 respectively. If $240\ V$ is applied on the primary coil, then the ratio of current in primary and secondary coil is
A) 4 : 5
B) 5 : 4
C) 5 : 9
D) 9 : 5
Explanation
(a) $\frac{N_{s}}{N_{p}} = \frac{i_{p}}{i_{s}} \Rightarrow \frac{i_{p}}{i_{s}} = \frac{4}{5}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.