hello, while making a circuit ( uploaded pic) ,the specifications of leds are 50mA/2V, i found the current ( ID )just before the leds to be around 180mA. i just want to know how to determine the currents in the circuit at various points( IA, IB , IC, ID). in general i want to know how to determine how a circuit draws current . do we have to take care of only voltage speciafications, voltage drops only and it will draw current automatically? just confused with the current calculations in this circuit. i hope if this will be cleared then it will help a lot in all others:) must respond.