A lamp consumes 1kW · h for 25h. What is the power of this lamp?

A lamp consumes 1kW · h for 25h. What is the power of this lamp?


The power of this lamp: P = wt = 1kW · h25h = 0.04kw = 40W. A: the power of this lamp is 40W



A lamp consumes 1kW · h for 25h. What is the power of this lamp?


The power of this lamp: P = wt = 1kW · h25h = 0.04kw = 40W. A: the power of this lamp is 40W



A lamp consumes 1kW · h for 25h. What is the power of this lamp?


The power of this lamp: P = wt = 1kW · h25h = 0.04kw = 40W. A: the power of this lamp is 40W



How many hours can the bulb marked "px220-40" work normally with 1kW / h power?
I'm in a hurry. I have the wrong number.
It's 1kW * H
I have the wrong number. = =
It's PZ.


Normal operation - it means that it works under rated voltage, so the formula can be used, t = w / P = 1000W * H / 40W = 25h
Warm tips: LZ your power symbol is wrong, it should be 1kW * H