Question

For a continuous current flow through a conductor, what must be maintained across the ends of the conductor?

Options

• An infinitely large resistance

• A zero potential difference

• A steadily decreasing temperature

• A constant potential difference, e.g., using a battery or power supply

Answer 1

For continuous current flow, a constant potential difference must be maintained across the ends of the conductor, for example using a battery or power supply. Without a sustained potential difference, the flow stops once potentials equalize.