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

Conductance and Conductivity

The conductance is a property of a substance due to which it facilitates the flow of current through it when a voltage is applied across the substance. It is a reverse of resistance because the resistance is the property of a substance by … Read more

Resistances in Series

Resistances in Series

When a number of resistances are connected in head to tail manner one after another in series is called resistances connected in series or simply resistances in series. We sometimes also call it series resistances.   The equivalent resistance of a series combination of resistances is algebraic sum of all the … Read more

Resistance in Parallel

Resistances in Parallel

When more than one resistors are connected in such a manner, that one end of all the resistors are connected to a common node and other end of all resistors are connected to another node. The parallel connection of resistors is … Read more

Carbon Composition Resistor

Types of Resistor

Its right to say that an electrical circuit is incomplete without a resistor and this passive component (the component that cannot amplify or process an electrical signal) has many interesting shapes and sizes. Before classifying … Read more