Virtually all electrical devices (actually, all except for superconducting devices) have resistance. There is one type of electrical device that is found in almost every electronic circuit ever...
The resistance lowers the flow of an electrical current. It also converts electrical energy that flows through it into heat, wasting the electrical energy.
The length and the material that the conductor is made from. Different wire sizes have different ohm/foot. The longer the length of the conductor the higher the ohms/foot. Gold has the best ohms/foot...
1) Bi metallic strip ,which acts as overload protection switch in electrical appliances. 2) Thermocouples, which use heat and cold effect to generate electricity.3) Thremo resistor which change their...