Q. If number of turns in primary and secondary coils is increased to two times each, the mutual inductance
A) Becomes 4 times
B) Becomes 2 times
C) Becomes 1 /4 times
D) Remains unchanged
Explanation
(a) As $M = \frac{\mu_{0}N_{1}N_{2}A}{l},\ \ therefore,\ M\ $becomes 4 times
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.