Energy used by a 2,000 W kettle in 3 minutes

Answer: energy = 360,000 J (in watt-hours 100 Wh, in kilowatt-hours 0.1 kWh).

What we know

  • Power: 2000 W
  • Time: 3 min = 180 s (converted to the unit the formula takes)

Step by step

Given
P = 2000 W, t = 180 s
Formula
E = P × t
Substitute
E = 2000 × 180
Result
E = 360,000 J

All results

Energy360,000 J
In watt-hours100 Wh
In kilowatt-hours0.1 kWh

Open the watts to joules calculator with these numbers → and change any of them.

The physics

A watt is one joule per second, so energy is simply power multiplied by the time it flows: E = P × t. Run a 60 W bulb for 60 seconds and it consumes 60 × 60 = 3,600 joules. The joule is the SI unit of energy; the watt is the rate at which that energy is delivered or used.