|Nov25-12, 04:11 PM||#1|
The current in an inductor when energy is stored. Please help!!!
1. The problem statement, all variables and given/known data
What's the current in a 15mH inductor when the stored energy is 42μJ
2. Relevant equations
E = 1/2 L i^2
3. The attempt at a solution
.000042J = (.5)(.015H)(i^2)
.000042J = (.0075)(i^2)
.0056 = i^2
√ (.0056) = i
.0748331 = i
I need to put the answer in with only two sig figs so i put in .07 but it was wrong
What am I doing wrong?
|Nov25-12, 05:16 PM||#2|
|Nov25-12, 05:37 PM||#3|
I'm dumb haha. Thanks!
|current, electronics, energy, inductor, physics|
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