February 22, 2017

Homework Help: Physics

Posted by Bruce on Wednesday, October 24, 2012 at 1:38pm.

A fully charged 90-µF capacitor is discharged through a 60-Ω resistor. How long will it take for the capacitor to lose 80% of its initial energy?

I know energy is given by E(t)=q(t)^2, but beyond that I really don't know how to solve this. Any suggestions are appreciated.

Thank you!

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