Fixed resistors are made of carbon encased in a plastic cylinder, with a connecting wire on either end. Most resistors used in electrons today are carbon resistors. Older resistors were made of...Read More
There is a resistance to the flow of an electric current through most conductors. The resistance in a wire increases and the thickness of the wire decreases. By increasing the length, the...Read More
As temperature rises, the number of photons increases and with it the photons will collide. When the temperature rises, the resistance increases. For some materials, resistivity or ohmic...Read More
Due to the wires having electrical opposition, which means that they resist the movement of electrons, the electrons bump into atoms on the outside of the wire, and their kinetic energy is given...Read More
Those power lines have a non zero resistance and therefore are subject to Joule heating, which causes transmission loss. The split of power between transmission losses and load energy conveyed to...Read More
Resistance is an abstract used for DC (direct currents) whereas impedance is AC or an alternating current parallel. Resistance is due to electrons in the conductor clashing with the ionic lattice...Read More
The ohmic resistance value of a specific substance is a material constant, and unlike resistance, is independent of the dimensions of the sample. Good conductors, such as gold, hold many...Read More
