Лаг1989 задача №15.12

The element whose EMF is 1.1V and the internal resistance r = 1 Ohm is short-circuited to an external resistance R = 9Ω. Find: a) the current in the circuit I; B) potential drop in the external circuit U1; C) the potential drop inside the element U2; D) with what efficiency does EMF work?

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