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Question

The length of a conductor is halved. Its conductance will be?
  1. Halved
  2. Doubled
  3. Unchanged
  4. Quadrupled

A
Halved
B
Doubled
C
Unchanged
D
Quadrupled
Solution
Verified by Toppr

σ = constant for a conductor, only depends on the material of the conductor
A= constant, as mentioned in the question
So G is inversely proportional to l.
l is halved then G becomes double.

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