Four idential cells each having e.m.f. E, internal resistance r are connected as shown in figure. Find the potential difference between: (i) A and B (ii) A and C

Seven identical cells each of e.m.f. E and internal resistance r are connected as shown . The potential difference between A and B is

Seven identical cells each of e.m.f. E and internal resistance r are connected as shown . The potential difference between A and B is

Four identical cells each having emf E and internal resistance r are connected in series to form a loop ABCD as shown in figure . Find potential difference across AB and AC .

N identical current sources each of emf E and internal resistance r are connected to form a closed loop as shown in figure. The potential difference between points A and B which divides the circuit into n and (N-n) units is

N identical current sources each of emf E and internal resistance r are connected to form a closed loop as shown in figure. The potential difference between points A and B which divides the circuit into n and (N-n) units is

Four cells each of emf E and internal resistance r are connected in series to form a loop ABCD. Find potential difference across (1) AB, (2) AC

Four cells each of emf E and internal resistance r are connected in series to form a loop ABCD. Find potential difference across (1) AB, (2) AC

A cell of emf E having an internal resistance R varies with R as shown in figure by the curve

A cell of emf E having an internal resistance R varies with R as shown in figure by the curve

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