In a digital logic circuit, which voltage level pair appropriately represents negative logic?

In digital logic circuits, negative logic represents a scheme where a higher voltage level corresponds to a binary '0' and a lower voltage level corresponds to a binary '1'. This is in contrast to positive logic, where the higher voltage level represents a binary '1' and the lower level represents a binary '0'.

The correct representation for negative logic is that a binary '1' is indicated by a more negative voltage, while a binary '0' is indicated by a less negative (also more positive) voltage. In the provided answer, binary '1' is represented with -10V and binary '0' with -5V. With -10V being less than -5V on the number line, this configuration aligns with the characteristics of negative logic, where a '1' is indeed represented by a larger negative voltage.

The other options do not accurately reflect this principle of negative logic. Options that suggest positive voltage levels for binary values do not adhere to the principles of negative logic, where negative voltage differentiates the states.