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

Here is the problem: http://img507.imageshack.us/img507/6488/unled2b.jpg [Broken]

What is the open circuit output voltage, Vout?

Estimate the short circuit output current

Can someone explain to me how to do these.

2. Relevant equations

Honestly... no idea. I know V=IR and all that but it doesn't seem to help here.

3. The attempt at a solution

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# Circuit problem

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