How many hours does one kilowatt hour power supply pz220-100 electric lamp

1 degree = 1kwh;
100W=0.1kW
t=W/P=1kWh/0.1kW=10h.

One bulb is marked with pz220-25, which consumes electric energy when it works normally for one hour And one degree of electricity will allow the bulb to work properly H if this light bulb
If it is connected to the 110V circuit, what is the actual power of the bulb W the current in the lamp is A

1：W=Pt=0.025kw*1h=0.025kw*h.
2：t=w/p=1kw*h/0.025kw=40h；
3: R = u squared / P = 220 * 220 / 25 = 1936 (Ω) with the filament resistance unchanged, then:
P real = u square / r = 110 * 110 / 1936 = 6.25 (W);
I = 110 / 1936 = 0.057 (a)

A battery, when moving 1C charge, the work of non electrostatic force is 2J, what is the electromotive force of the battery? To supply power to a small bulb, the supply current is

Electromotive force E = w / P = 2 / 1V = 2V
Without the resistance of a small bulb, it is impossible to calculate the supply current. (I = u / R)

There is a battery, when moving 1C charge, the work of non electrostatic force is 2J, and the electromotive force of the battery is 2J To supply power to a small bulb, the supply current is 0.2A, the supply time is 10min, and the non electrostatic work is ．

Electromotive force E = WQ = 21 = 2V; the work of non electrostatic force is equal to the electric energy consumed by the power supply; therefore, the work of non electrostatic force w = EIT = 2 × 0.2 × 10 × 60 = 240j; therefore, the answer is 2V; 240j

How many hours does one kilowatt hour power supply pz220-100 electric lamp