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

the current through an element is i = 2t^2 - 1 Amps. if that element is a 4H inductor, what is the energy delivered to it from time t=1 to t=3.

2. Relevant equations

energy in an inductor is dw = Li di

3. The attempt at a solution

i = 2t^2 - 1

di = 4t dt

w = L integral[ (2t^2 - 1)(4t) dt ] from 1 to 3 seconds

i just want to confirm it with someone if i did it right or not. i felt like i did. thanks.

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# Homework Help: Energy in an inductor

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