If n cells each of emf E and internal resistance rare connected in parallel, then the total emf and internal resistances will be

m' cells each of emf E and internal resistance 'r' are connected in parallel. What is the total emf and internal resistance? Under what conditions is the current drawn from mixed grouping of cells maximum?

Fill up the blanks: Three identical cells each of emf (E) and internal resitance (r ) are connected in parallel. The effective emf and effective internal resistance are __________ and _________.

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

In a connection of 10 dry cells each of emf E and internal resistance r in series, two cell is connected opposite. Net emf and net internal resistance will be:

Four cells each of emf 2V and internal resistance 1 ohm are connected in parallel with an external resistance of 6 ohm. The current in the external resistance is

If a number of cells are connected in parallel then write their equivalent emf and internal resistance.

Four cell each of emf 2 V and internal resistance 1 ohm are connected n parallel with an external resistance of 6 ohm. The current in the external resistance is

Two identical cells, each of emf E, having negligible internal resistance, are connected in parallel with each other across an external resistance R. What is the current through this resistance?

A cell of emf 10 V and internal resistance 3 Omega is connected in parallel with another cell of emf 7V and internal resistance 3/5 Omega, such that their positive terminals are joined together and so there are negative terminals. Their positive terminals are joined with the negative terminal and their negative terminal is joined with the positive terminal of a third cell of emf 20 V with internal resistance 2Omega. The combination can be replaced by a battery of emf E and internal resistance r, then the values of E and R are respectively