N batteries each of emf E and internal resistance r are first connected in series and then in parallel to an external resistance R. if current through R is same in both cases then.

n identical calls, each of internal resistance (r) are first connected in parallel and then connected in series across a resistance (R). If the current through R is the same in both cases, then

Two batteries each of E and internal resistance r are connected turen by turn in series and in parallel, and areused to find current in an external resistance R . If the current in series is equal to that in parallel, the internal resistance of each battery is

n number of cells e.m.f of each is E and internal resistance is r connected in parallel or series combination and are connect to external resistance R.Same current flows through R in both cases. Then—

Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, the current in the external circuit is

n cells of e.m.f E and internal resistance r are connected in series with an external resistance R . the current will increase n times that of a single cell, if

n cells, each having emf. E and internal resistance r are connected in parallel. What is the net internal resistance of the combination?

Five identical cells each of internal resistance 1 Omega and emf 5V are connected in series and in parallel with an external resistance 'R' . For what value of 'R', current in series and parallel combination will remain the same ?