Resistor Networks

Most circuits you come across will contain a number of resistive components. Sometimes it is necessary to be able to calculate the effective resistance or conductance of a combination of resistors. Here are the formulae for simple combinations.

If you are struggling to find the resistance of parallel combinations you might find it easier to work using conductance instead.

Consider these examples;

Calculate the voltage across and the current through each of the resistors below.

When tackling problems like these there are always several ways of approaching them. If you follow the basic rules you should find a solution in the end.