(Solved): In the circuit above, the ammeter \( (\mathrm{A}) \) is an ideal ammeter (so ...

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In the circuit above, the ammeter \( (\mathrm{A}) \) is an ideal ammeter (so without internal resistance); the voltmeter (V) is also ideal (so with an infinitely large resistance). The two e.m.f. sources have negligible internal resistance. The voltmeter reads a positive value when the voltage of the \( + \)-connector is higher than the voltage of the connector (see picture) The ammeter reads a positive value when the current runs from the \( + \)-connector to the \( - \)-connector. What are the readings of the ammeter and the voltmeter?