ABSTRACT
Ohm’s law states a very simple relationship between voltage, current, and resistance. It can be used to calculate the behaviour of very many circuits and is probably the single most useful calculation to know when it comes to working out what is going on in pretty much any electrical system. Kirchhoff’s voltage law states that the sum of all the voltage drops around any loop or closed path in an electric circuit is zero. When using Kirchhoff’s voltage law the path taken around the circuit may or may not take in any power sources such as batteries which are present in the circuit, the law works for any path. Often different components can cope with different amounts of power, and so it can be important to calculate the power which will be dissipated in a circuit or in a particular component.
