1. Current passes through a solution of sodium chloride. In 1.00 second, 2.681016Na+ ions arrive at the negative electrode and 3.921016Cl?ions arrive at the positive electrode.

Part A

What is the current passing between the electrodes?

Express your answer in milliamperes to three significant figures.

Part B

What is the direction of the current in the ionic solution?

2. Four very long, current-carrying wires in the same plane intersect to form a square with side lengths of 50.0 cm , as shown in the figure (Figure 1). The currents running through the wires are 8.0 A, 20.0 A, 10.0 A, and I

10.0 A 8.0 A 20.0 A