A TV has a power rating of 10W, and is left on for two minutes. How much energy does it use? (Hint: first, convert minutes into seconds, then use energy = power x time)

Answer 1

There are 60 seconds in a minute, so 2 minutes is 120 seconds.

Using the formula energy = power x time:

energy = 10W x 120s

energy = 1200 Joules

Therefore, the TV uses 1200 Joules of energy over the two minute period.