Question

If the internal resistances of the cells are very low compared to external resistance R, to get the maximum

advantage how the cells are supposed to connect? Deduce its expression​

Answer 1

Ques:

The cells are joined in parallel to get the maximum current when?

Explanation:

Cells are said to be connected in parallel when they are joined positive to positive and negative to negative such that current is divided between the cells.

The emf of the battery is the same as that of a single cell. The current in the external circuit is divided equally among the cells. The reciprocal of the total internal resistance is the sum of the reciprocals of the individual internal resistances.

Let us consider the following.

Total emf of the battery = E

Total Internal resistance of the battery = r / n

Total resistance of the circuit = (r / n) + R

So, Current I =

nR+r