A potentiometer wire is 5 m long and a potential difference of 6 V is maintained between its ends. Find the emf of a cell which balances against a length of 180 cm of the potentiometer wire.

Asked by Topperlearning User | 28th Apr, 2015, 10:11: AM

Expert Answer:

 Potential gradient of the potentiometer wire is:

  

Answered by  | 28th Apr, 2015, 12:11: PM