(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Calculate Load Resistance

1. The problem statement, all variables and given/known data

Find RL if PL is 90W.

2. Relevant equations

PL= ((V^2)*(RL))/((RL+r)^2)

3. The attempt at a solution

I calculated the internal resistance to be 5 Ohms on my circuit with a supply voltage of 100V

So, 90W = ((100^2) * (RL))/((RL + 5)^2)

From this equation how do I rearrage the formula to get the Load Resistance?

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# Homework Help: Calculate Load Resistance

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