Question

An oven uses 4500 watts of power in 2 minutes, how much work was done?


An oven uses 4500 watts of power in 2 minutes, how much work was done?


540,000 J


360,000 J


2,250 J


9,000 J

Answer 1

First of all we state the formula
Power=work done/time
we can rearrange this formula as well
work done=power x time

Since the SI unit of time is in seconds we change the minutes to seconds
2mins= 60x2 = 120 seconds

Using our formula (work done=power x time) we simply put in the values
work done = 4500 x 120
work done = 540,000J