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0 votes
3 answers
169 views

Why is Power in an electric circuit equal to $VI$? [closed]

Where did this formula come from? Everyone I asked just told me to substitute values of in ohms law to derive this but no one told why is power equal to voltage * current. Part of the reason for this ...
potato's user avatar
  • 9
9 votes
10 answers
6k views

Why is Power = Voltage $\times$ Current?

So P = I*V because V is the amount of energy per coulomb and I is the amount of electrons going past a cross sectional area in one second. So if we do the math, since V = J/C and I = C/sec, if we ...
ikigai20's user avatar
  • 191
2 votes
1 answer
164 views

Does a CPU do work?

This question is simple to the Core (excuse the pun). CPU = Central Processing Unit (for computing) Lots of people including myself say "My CPU is doing a lot of work." But I do not think ...
TheArchitecta's user avatar