Electric potential is read as what in the sensor?

• A. Temperature
• B. Voltage
• C. Current
• D. Capacitance

Answer: (B)

Electric potential is the potential energy per unit charge, and in sensors this is expressed as voltage. A sensor outputs a voltage that represents the electric potential difference between two points, typically its terminals and a reference. This makes voltage the practical readout for electric potential. It’s not temperature (thermal energy), not current (flow of charge), and not capacitance (how much charge a component can store).