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## Homework Statement

A pgysics student wishes to determine the amount of electic enery consumed in one day at his school as a result of classsrom and hallway lighting. A quick survery revealed that there were approximately 200 40 W fluroescent lights opearting under a potentional difference of 240 V for 16 hours each day.

Hey guys, this isn't a hard question, I just dont know how to do it, could you please explain how?

## Homework Equations

V=IR V= deltaEq/Q

## The Attempt at a Solution

I dont know where to put the watts in my equations or what to do with it.