Networks Analysis and Synthesis

Q1: A wire has a diameter d and resistance R. If the diameter is made 3d, the length and material remaining the same, the new value of resistance will be

A R/3

B 3 R

C R/9

D 9 R

ANS:C - R/9

Since diameter is 3d, area of cross-section is increased 9 times. Therefore, resistance is R/9.



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