Two cells of emfs 1.5 V and 2.0v having internal resistance 0.2`Sigma` and 0.3 `Sigma` respectively are connected in parallel . Calculate the emf and internal resistance of the equivalent cell .

If three cell are connected in parallel then equivalent emf……. and equivalent internal resistance is …..

If three cell are connected in parallel then equivalent emf……. and equivalent internal resistance is …..

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

Two batteries of emfs 2 V and 1 V of internal resistances 1Omega and 2Omega respectively are connected in parallel. The effective emf of the combination is

Two cells of e.m.f. 2.5 V and 2.0 V having internal resistance of 1Omega and 2Omega respectively are connected in parallel with similar poles connected together so as to send the current in the same direction through an external resistance of 2Omega . The current in the external resistance is