300w一小时多少度电
To convert watts to kilowatt-hours (kWh), divide the number of watts by 1000.
Therefore, 300 watts is equal to 0.3 kilowatts.
To calculate the number of kilowatt-hours in one hour, multiply the power consumption in kilowatts (0.3 kWh) by the number of hours.
For example, if you consume 300 watts for 1 hour, it would be 0.3 kWh x 1 hour = 0.3 kilowatt-hours.
3000w一小时多少度电
1 度电 = 1 千瓦时（kWh）
3000W = 3kW
则 3kW 的电器工作 1 小时的耗电量为 3×1 = 3 度。
所以 3000W 的电器一小时耗电 3 度。