Electric circuits contain currents that flow in agreement with particular laws.
One of the basic law of current flow is Ohm's Law, which was named after the German physicist Georg Ohm. Ohm's law states that the amount of current flowing in a circuit made up of resistors is equal to the electric force impressed on the circuit and inversely equal to the total resistance of the circuit. Another basic law of current flow is Kirchoff's Law, which was discovered by the German physicist Gustav Robert Kirchhoff. It states that at any point in a circuit through which a steady current is flowing, the sum of the currents flowing to the point is equal to the sum of the currents flowing away from that point. It also states that, starting at any point in a circuit and following any path back to the starting point, the net sum of the electric forces faced will be equal to the net sum of the resistors met and the currents flowing through them.