Draw a labelled circuit diagram of a potentiometer to measure internal resistance of a cell- Write the working formula- -Derivation not required-

Question

Toppr Admin · Accepted Answer

Working Formula- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- -xA0- r-R-l1l2-x2212-1-where- the null deflection of galvanometer comes for first cell at a length of l1 on the scale and the null deflection of galvanometer comes for the second cell at a length of l2 on the scale

Draw a labelled circuit diagram of a potentiometer to measure internal resistance of a cell. Write the working formula. (Derivation not required).

Working Formula: $r = R (\begin{matrix} \frac{l_{1}}{l_{2}} - 1 \end{matrix})$
where, the null deflection of galvanometer comes for first cell at a length of $l_{1}$ on the scale and the null deflection of galvanometer comes for the second cell at a length of $l_{2}$ on the scale

Draw a labelled circuit diagram of a potentiometer to measure internal resistance of a cell. Write the working formula. (Derivation not required).

Working Formula: r=R(l1l2−1)where, the null deflection of galvanometer comes for first cell at a length of l1 on the scale and the null deflection of galvanometer comes for the second cell at a length of l2 on the scale

Working Formula: $r = R (\begin{matrix} \frac{l_{1}}{l_{2}} - 1 \end{matrix})$
where, the null deflection of galvanometer comes for first cell at a length of $l_{1}$ on the scale and the null deflection of galvanometer comes for the second cell at a length of $l_{2}$ on the scale