A coil is wound on a transformer of rectangular cross-section. If all the linear dimensions of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self-inductance is increased by a factor of
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya
a
16
b
12
c
8
d
4
answer is C.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
Self-inductance, L=μ0N2A/l=μ0n2lAWhere n is the number of turns per unit length and N is the total number of turns, i.e., N = nlIn the given question n is same. A is increased 4 times and l is increased 2 times and hence L will be increased 8 times.