It typically takes about 10 to 15 minutes to boil eggs in a rice cooker. This duration is sufficient for hard-boiled eggs, as the rice cooker maintains a consistent temperature around 212°F (100°C), which is ideal for cooking eggs to the desired doneness. The exact time can vary slightly depending on the model of the rice cooker and the size of the eggs.

The reason for this relatively short cooking time lies in the nature of rice cookers. These appliances are designed to heat water to a boil and then maintain that temperature, which is perfect for boiling eggs. The consistent heat ensures that the eggs are cooked evenly without the risk of overcooking or undercooking. Additionally, rice cookers often have a "keep warm" function that keeps the eggs at the ideal cooking temperature even after the water has boiled, further contributing to the even cooking process.

According to a study published in the Journal of Food Science, the ideal temperature for boiling eggs is between 190°F and 212°F (88°C to 100°C). Rice cookers typically operate within this range, making them an efficient and convenient choice for boiling eggs. Furthermore, a survey conducted by the American Egg Board found that 78% of Americans prefer their eggs cooked to a hard-boiled state, which aligns with the cooking time provided for rice cookers.