What is defined as the voltage between a conductor and the ground in a grounded circuit?

The term that describes the voltage between a conductor and the ground in a grounded circuit is voltage to ground. This concept is critical in electrical systems, particularly those that are earthed or grounded, as it ensures safety by allowing for fault currents to be directed safely to the earth, thereby reducing the risk of electrical shock or fire.

In grounded circuits, the voltage to ground provides a reference point for the system and is essential in determining the behavior of the electrical equipment and the potential difference that exists relative to the earth itself. This value plays a vital role in protective relaying and the overall stability of the electrical system.

Other choices do not accurately reflect this specific definition. Voltage drop refers to the reduction in voltage in a circuit due to resistance and is not a measure of voltage relative to ground. Phase voltage typically refers to the voltage of a specific phase in a multi-phase system, while line voltage pertains to the voltage measured between two conductors in a multi-phase system, which does not directly relate to ground.