Electronics Handbook/Circuits/Current Divider

If two elements are in parallel, the voltage across them must be the same, but the current divides according to the resistances. A simple circuit with two (or more) resistors in parallel with a source is called a current divider. Image:Resistorsparallel.png Figure B: Parallel Resistors. Mathematical Formula If a voltage is applied across the resistors in Figure B with only and for the moment then the current flowing in the circuit, before the division, is according to Ohm’s Law: i Using the equivalent resistance for a parallel combination of resistors is p The current through according to Ohm’s Law is s Dividing equation s by p d Similarly b In general with resistors the current is x Or possibly more simply y Where z