Transformers are rated according to their ability to handle:

Transformers are primarily rated based on their ability to handle voltage, current, and power. This is because transformers are designed to transfer electrical energy efficiently from one circuit to another through electromagnetic induction, maintaining required voltage levels while adapting current and power in accordance with the demands of the load.

Voltage rating indicates the maximum voltage the transformer can handle safely without risk of insulation breakdown. Current rating represents the highest amount of current that the transformer can carry without overheating, which is essential to ensure the transformer's integrity and functionality. Power rating, often expressed in VA (volt-amperes) or watts, defines the maximum power the transformer can deliver to a load without exceeding its thermal limits.

The other options mention parameters like resistance, capacitance, and inductance, which are not directly associated with the fundamental rating criteria for transformers. While they are important in electrical circuits, they do not represent the core specifications that define a transformer's performance in terms of energy transfer and operation.