Georg Simon Ohm

Electrical Resistance

Whenever we apply an electric potential difference between two points in a substance there is an electric current flowing through it one point to another. This current may be anything from zero to infinity depending … Read more

Resistivity

Laws of Resistance and Resistivity

Laws of Resistance A conductor is anything which can conduct electricity. Every conductor offers certain resistance to the electric current through it. This resistance depends on four factors. The length,  cross section, material and temperature. The resistance (R) of a … Read more