The length of a potentiometer wire is
and it carries a current of
. For a cell of emf
and internal resistance of
, the null point on it is found to be at
. The resistance of whole wire is:
The length of a potentiometer wire is and it carries a current of . For a cell of emf and internal resistance of , the null point on it is found to be at . The resistance of whole wire is:
Option 1 -
Option 2 -
Option 3 -
Option 4 -
-
1 Answer
-
Correct Option - 2
Detailed Solution:Potential gradient
and
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