Which one of the following is not a measurable quantity?

Step-by-step solution

In electrostatics and circuit theory, potential (voltage) at a single point is defined relative to a reference point (usually infinity or ground where potential is assumed to be zero). Absolute voltage at a point is not a physically measurable quantity because only the difference in potential between two points can be measured using instruments like a voltmeter. Resistance can be measured using an ohmmeter or bridge circuits. Displacement current is a physical quantity that can be calculated and its effects (magnet