Correct diagram for the determination of internal resistance of a primary cell by potentiometer is

Question

Correct diagram for the determination of internal resistance of a primary cell by potentiometer is (A) Option 1

(B)

(C)

(D)

Tardigrade Admin · Accepted Answer

The polarity of primary cell and secondary cell should be in same sense. Also, a key is kept in series with resistance box to measure emf when the key is open.

Q. Correct diagram for the determination of internal resistance of a primary cell by potentiometer is

The polarity of primary cell and secondary cell should be in same sense. Also, a key is kept in series with resistance box to measure emf when the key is open.