# Finding the power supplied by a battery

I have a multiple loop circuit, which I was able to apply Kirchhoff's rules to in order to find the current of each resister. However, got stuck trying to determine the power supplied by the batteries (one in each loop). I tried using the equation p= I $$\epsilon$$, where $$\epsilon$$ is the volts of the battery and I is volts of the battery divided by equivalent resistance of the loop that I am solving. Something seems to be wrong in my calculations, and I am not quite sure what I am doing wrong.

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I have a multiple loop circuit, which I was able to apply Kirchhoff's rules to in order to find the current of each resister. However, got stuck trying to determine the power supplied by the batteries (one in each loop). I tried using the equation p= I $$\epsilon$$, where $$\epsilon$$ is the volts of the battery and I is volts of the battery divided by equivalent resistance of the loop that I am solving. Something seems to be wrong in my calculations, and I am not quite sure what I am doing wrong.
You probably did your nodal analysis wrong. If you calculated the currents correctly then you can use $$P=IV=I(IR)=I^2R$$ .

Note that V is the power across the resister.

rcgldr
Homework Helper
Note that battery voltage and total capacity will drop as the load increases.

uart