How much electrical energy flows through a wire in 1 second when the power is 1 kW? Options: A . &nbsp1400 J B . &nbsp1000 J C . &nbsp800 J D . &nbsp400 J

How much electrical energy flows through a wire in 1 second when the power

Question

How much electrical energy flows through a wire in 1 second when the power is 1 kW?

Options:

A . 1400 J

B . 1000 J

C . 800 J

D . 400 J

Answer: Option B
:
B
We know that,

P o w e r = \frac{Energy}{time}

, the SI unit of power is watt, energy is joule and time is second.
So, 1 W = 1 joule per sec and 1 kW = 1000 joule per sec.
Therefore, 1000 Jelectrical energy flows through the wire in 1 second when the power is 1 kW.

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