Question

A long, vertical, metallic wire carries downward electric current. (ii) What would be the direction of the field if the current consisted of positive charges moving downward instead of electrons moving upward? Choose from the same possibilities as in part (i).

Answer 1

The direction of the conventional current that generates the magnetic field at a specified place determines its direction. The direction of the field if the current consisted of positive charges moving downward instead of electrons moving upward is South.

What is the electric current's direction?

In terms of circuit analysis, the direction of electric current from positive to negative is usually considered as well. Positive charges moving in the opposite direction are mathematically similar to negative charges moving in the same way. Therefore, it does not have any effect. When examining a circuit, the flow of current from positive to negative or vice versa can be taken into account. In actuality, negatively charged electrons can attract positively charged ions. Conventionally, a positive charge would flow in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart. Actually, electrons would flow in the reverse direction across the wires.

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