A solver's toolkit(Exposition)

A kitset for thinking about circuits

First you'll have to identify the lkind of circuit you are dealing with.

To analyse a circuit usually means that you calculate all of the potential differences and currents from the cell potential difference and the resistances in the circuit. Sometimes there will be other puzzles, involving designing for a particular current, and so choosing a resistor, but the principles remain the same. From this analysis you will be able to find what the power is in each pathway—simply multiply the current by the potential difference for that pathway.

And here are the simple steps to follow:

For combination circuits these are the steps: