I don’t quite understand how to get the maximum efficiency in a circuit.
4 Volts and 2.0Ω will produce 8 watts with a current of 2.0 amps.
5 Volts and 3.1Ω will produce 8 watts with a current of 1.6 amps.
There are infinitely ways to do so. Also we have an led which has to be connected.
2. Relevant equations
3. The attempt at a solution
My intuition says that the first one is more efficient, but the battery will drain faster. I realy want to know how to mix this information together for my circuit.