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dissipated power ratio

I am stuck on a question where i have to work out the dissipated power. I have looked over all the equations that i was given in class but none of them fit the question. I need to find the dissipated power from a graph that tells me at 30 seconds the current is 6 and at 0 seconds the current is 2. I know how to work out the ratio but could someone tell me how to find power using current and time.
Thank you.
Sorry you've not had any responses about this. :frown: Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses. :redface:

I'm going to quote in Tank Girl now so she can move your thread to the right place if it's needed. :h: :yy:

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