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What is the method of finding the resistance value in a given circuit when one value of one of the resistance.Given E (EMF),one resistance in circuit, value of second resistance to be worked out to get maximum power.

I tried to find as below

min resistance will give max current.

I^2R will be max

as resistances are in series, for min equivalent resistance, external resistance has to be minimum.

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# Homework Help: Find value of resistance to get max power in circuit

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