Above, [Bil] used his bench as a whiteboard to illustrate the thermal resistance equation. In this case each resistor symbol represents part of the heat dissipation. You must consider all places ...

Electrical resistance is the opposition offered by a conductor to the flow of current around a circuit. A good conductor has low resistance. An insulator, or poor conductor, has high resistance.

A second experiment can be carried out to investigate experimentally how the resistance of a metallic conductor at constant temperature depends on the area of cross section. The above experiment ...