Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A coaxial cable consists of an inner wire of radius ' 
' surrounded by an outer shell of inner and outer radii ' 
' and 'c' respectively. The inner wire carries an electric current 
, which is distributed uniformly across cross-sectional area. The outer shell carries an equal current in opposite direction and distributed uniformly. What will be the ratio of the magnetic field at a distance 
from the axis when (i) 
and (ii) 
?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
when 
when 
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