Q. The number of turns in the primary coil of a transformer is 200 and the number of turns in the secondary coil is 10. If $240\ volt\ AC$ is applied to the primary, the output from the secondary will be
A) $48\ V$
B) $24\ V$
C) $12\ V$
D) $6\ V$
Explanation
(c) $\frac{V_{s}}{V_{p}} = \frac{N_{s}}{N_{p}} \Rightarrow V_{s} = \frac{N_{s}}{N_{p}} \times V_{p} = \frac{10}{200} \times 240 = 12\ volts$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.