A long, straight wire of radius a caries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to the wires at distance a3 and 2a. respectively from the axis of the wire is :
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
1/2
b
3/2
c
2/3
d
2
answer is C.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
At inside point P , Bp=μ0ia32πa2=μ0i6πa because i α π R2 and ix α πx2At outside point Q , Bq=μ0i2π2a∴Ratio =BpBq=23