I am desgning a circuit(network), where i need to show the path traversed by the greater part of the current at each node, consecutively. using an ammeter (or voltmeter) in every branch (around 20) makes it too tedious. Will LEDs do the required work? But they would light up at all locations, though their intensity might be different, will it be detectable to the eye? what should be the typical values of current (differences) for it to get detectable? is the any better (cheap) method? thankyou.