Electronics and Communication Engineering - Networks Analysis and Synthesis - Discussion
Discussion Forum : Networks Analysis and Synthesis - Section 5 (Q.No. 45)
45.
A conductor has a cylindrical shape with a diameter d. Its resistance is 2 Ω. It is recast into a cylindrical conductor of diameter 0.3d. The resistance of new conductor is likely to be
Answer: Option
Explanation:
Since new diameter is 0.3 d, the new area of cross-section a (0.3 d)2.
The volume remains the same. Therefore length increase by a factor 
.
Hence 
.
Discussion:
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