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(a) Three cells of emfs, 1.5 V, 2.0V and...

(a) Three cells of emfs, 1.5 V, 2.0V and 2.5 V are connected in series. Their internal resistance are `0.20 Omega, 0.15 Omega` and `0.15 Omega` respectively. The battery is connected to an external resistor of `5.5 Omega` via a very low resistance ammeter, what would be the reading of ammeter?
(b) If the three cells above were joined in parallel, would they be characterised by a definite emf and internal resistance (independent of their individual internal resistance )? If not, how will you obtain currents in different branches of the circuit ?

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