(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An electric current described by I = 12 sin(250t) flows through a 20 ohm resistor. Calculate the power dissipated as heat.

2. Relevant equations

V=IR

P=IV

P = I^2*R

3. The attempt at a solution

Using the last equation, P = I^2*R

P = 2880 sin^2(250t)

Is that the best answer I can give? The question gives no information about efficency so I'm not sure if I'm forgetting an equation or something. It doesn't give a value for time either.

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# Homework Help: Power and current

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