Calculating Power in Linearity Properties with Two Sources

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Defcon55
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I've been presented with a question, but I am not sure how to approach it:

A linear resistor containing two sources drives a 100ohm load resistor. Source #1 delivers 250mW to the load when source #2 is off.
Source #2 delivers 4W to the load when source #1 is off.

My question is, how would I go about finding the power delivered when both sources are on?

I know that the answer isn't 4.25W, because that would just be the sum of the two powers, and disregarding the resistor.

Thanks for your help.
 
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What is a "linear resistor containing two sources"? I'm not able to picture what you are asking.
 
berkeman said:
Thread moved to Homework Help forums.

What is a "linear resistor containing two sources"?

The linear part just means basically that it is a simple circuit (has additivity and proportionality)

As for the two sources, it could be a power or voltage source, atleast if my understanding is correct.