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Q no 66?...............................................................................................

Q no 66?...............................................................................................

Question Image
Grade:12

1 Answers

Adarsh
763 Points
3 years ago
Dear Utkarsh ,
In potentiometer , 
let r be its internal resistance …
L1/r1 = L2/r2  => 52/r = 40 x (5 + r)/5r  => r = 6/4 = 1.5 
 
Thanks and Regards 
Adarsh

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