Question

how do you change a circuit to give negative values for current and potential difference

Answer 1

Negative current can also be achieved when current is allowed to flow in other direction. If the direction of the current is changed, the voltage will read negative. Changing of power or battery terminals can make voltmetre to read negative.

Answer 2

Answer:

by changing the battery terminals of negative and positive terminals by changing these terminals we can change our circuit to give negative values of current and potential difference