Physics

Problem

During an experiment, an ammeter in the wire leading into a junction reads

3.5\,\text{A}

. Another ammeter in one branch leaving the junction reads

1.4\,\text{A}

. Assuming ideal meters and wires, what current should the student predict for the second branch leaving the junction? a)

4.9\,\text{A}

2.1\,\text{A}

1.4\,\text{A}

3.5\,\text{A}