In the circuit shown, if the reading of the ammeter is (0.5A), answer the following questions:   a- Find the equivalent resistance (Req) in the circuit.       b- Find the value of the electromotive force (εo).      c- Find the reading of the voltmeter (V).     d- On the circuit above connect a device (location) , which enables you to determine the current in R1, and what value will it read?     Write all conclusions you have satisfied in the experiments

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