A condenser operating above its rated voltage is likely to?

A condenser operating above its rated voltage is likely to break down due to the excessive stress placed on its insulation and components. Every electrical component, including condensers, is designed to operate within specific voltage limits to ensure safe and efficient performance. When operating above this rated voltage, the dielectric breakdown can occur, leading to failure of the insulating material and potentially resulting in short circuits or catastrophic failure of the condenser. This breakdown can also lead to overheating, excessive wear, and a complete loss of functionality.

In contrast, performing better, increasing efficiency, or having a longer lifespan are all typically associated with operation within the design specifications. Exceeding the rated voltage compromises these aspects and heightens the risk of failure.