Xiaoming's family has electric fans and incandescent lamps with rated power of 40W. They work normally for the same time____________ Generate heat Many. Xiaoming's family also has a "220V 1500W" electric water heater, which is separately connected in the circuit. It is found that the aluminum plate on the electric energy meter (as shown in the figure) rotates 125 revolutions in 121s, and the electric water heater consumes a lot of energy____________ J's electric energy, the actual voltage of his home is____________ 5. (the resistance value of the resistance wire in the electric water heater remains unchanged)

Xiaoming's family has electric fans and incandescent lamps with rated power of 40W. They work normally for the same time____________ Generate heat Many. Xiaoming's family also has a "220V 1500W" electric water heater, which is separately connected in the circuit. It is found that the aluminum plate on the electric energy meter (as shown in the figure) rotates 125 revolutions in 121s, and the electric water heater consumes a lot of energy____________ J's electric energy, the actual voltage of his home is____________ 5. (the resistance value of the resistance wire in the electric water heater remains unchanged)

First space: incandescent lamp
Analysis: incandescent lamp converts electric energy into light and heat, while electric fan mainly converts electric energy into mechanical energy with little heat
The second space: the diagram on the electric energy meter is very important, and the key diagram ××× R / kW · h is provided for the convenience of solving the problem

Connect an electric fan, a TV set and an electric iron with the specifications of "220 V, 220 W" into the home circuit respectively
The power on time is the same, the following statement about the heat generated by the current through them is correct
A the electric fan produces more heat
B TV sets produce more heat
C electric iron produces more heat
D the three produce the same amount of heat

Electrical appliances with the same power are connected to the home circuit and consume the same electric energy in the same time, so the electric energy consumed by the above three kinds of electrical appliances is equal. The electric energy consumed will be converted into other forms of energy, and the electric fan will rotate and generate heat. Therefore, the electric energy consumed will be converted into mechanical energy and heat energy