The space between two coaxial cylinders whose radii are a and b (where a < b) as shown in figure, is filled with a conducting medium. The specific conductivity of the medium is σ. σ= 
, where r is radial distance from common axis of both cylinder. Assuming L >> b, where L is the length of cylinder –
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Consider a cylinder of radius r and thickness dr
dR = 
= 
dR = 
Resistance = 
= 
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