The kettle can typically be used immediately after purchase. Most electric kettles are designed for immediate use and do not require any special preparation or waiting period. This is because they are designed to heat water quickly and safely, without the need for pre-treatment or extended cooling times.

The reason for this immediate readiness is due to the manufacturing process and safety standards that electric kettles adhere to. Electric kettles are constructed with materials that can withstand high temperatures and are designed to distribute heat evenly. They also have safety features such as automatic shut-off when the water reaches boiling point, preventing overheating and potential damage. According to a study by the Consumer Product Safety Commission (CPSC), electric kettles are among the safest household appliances when used as intended.

Furthermore, the rapid heating capabilities of electric kettles are a result of their efficient design. These kettles are equipped with a heating element that is specifically designed to heat water quickly, often reaching boiling point within a few minutes. This efficiency is not only convenient for users but also ensures that the kettle is ready for use as soon as it is plugged in and filled with water.

In conclusion, electric kettles can be used immediately after purchase due to their efficient design, safety features, and the absence of any necessary preparation or waiting period. This convenience is a testament to the advancements in appliance technology and the emphasis on user safety and satisfaction.