A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used across the potentiometer wire, has an emf of 2.0 V and a negligible internal resistance. The potentiometer wire itself is 4 m long. When the resistance, R, connected across the given cell, has values of. (i) infinity (ii) 9.5 Ω, the 'balancing lengths', on the potentiometer wire are found to be 3 m and 2.85 m, respectively. The value of internal resistance of the cell is:

Question

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used across the potentiometer wire, has an emf of 2.0 V and a negligible internal resistance. The potentiometer wire itself is 4 m long. When the resistance, R, connected across the given cell, has values of. (i) infinity (ii) 9.5 &Omega;, the 'balancing lengths', on the potentiometer wire are found to be 3 m and 2.85 m, respectively. The value of internal resistance of the cell is:

cdquestions Admin · Accepted Answer

The correct option (B): 0.5 &Omega;

Answer

<div>0.95 &Omega;</div>

Answer

<div>0.5 &Omega;</div>

Answer

<div>0.75 &Omega;</div>

Answer

<div>0.25 &Omega;</div>

The Correct Option is B

Solution and Explanation

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