What is the expected system voltage when measuring across toggle switch terminals in the 'on' position?

When measuring across toggle switch terminals in the 'on' position, the expected system voltage reflects a normal condition. In this state, the switch completes the circuit, allowing current to flow freely through the contacts. As a result, when you measure voltage across the terminals, you should see the nominal voltage level that corresponds to the system's power supply, confirming that the circuit is active and functioning properly. This situation is indicative of a closed circuit where electrical continuity is established, enabling the operation of any devices connected to that switch.

Options suggesting an open circuit or shorted contacts would not yield the expected system voltage, as they imply disruptions in continuity and flow of electricity. An open circuit would result in zero voltage being measured, while shorted contacts might present an abnormal or very low resistance reading, potentially leading to a different kind of short-circuit scenario. Thus, a normal condition is the expected outcome when the switch is in the 'on' position, supporting proper voltage readings across the terminals.