Two identical batteries each of e.m.f 2V and internalresistance 1Ω are available to produce heat in anexternal resistance by passing a current through itThemaximum power that can be developed across R usingthese batteries is [1990]

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Two identical batteries each of e.m.f 2V and internalresistance 1Ω are available to produce heat in anexternal resistance by passing a current through itThemaximum power that can be developed across R usingthese batteries is [1990]