A 1000-watt microwave oven takes 60 seconds to heat a bowl of soup. How many joules of energy does it use?

1 Answer
Aug 3, 2014

The microwave uses 6000 J of energy.

Where P = Power, t = time, and W = work ...

P = 1000 watts
t = 60 seconds

The formula for Power is given by:

P = W/t

Therefore:

1000 Watts = W/60

So ...

W=1000(60) =6000 W (or J=Joules)

From this, we can say that a microwave oven of 1000 W uses 6000 J of energy in 1 minute (60 seconds).