Electrostatics

The Magnetic field lines around a straight conductor carrying current are concentric circles whose centers lie on the wire. Smooth cardboard with iron filings spread…

Thermopile is a device used to detect thermal radiation. It works on the principle of Seebeck effect. Since a single thermocouple gives a very small…

Corkscrew is a device that is used for pulling a cork from a bottle and consists of a spiral. The direction of the circular magnetic…

Thomson suggested that when a current flows through unequally heated conductors, heat energy is absorbed or evolved throughout the body of the metal. Fig: Thomson…

The amount of heat energy absorbed or evolved when one-ampere current flows for one second (one coulomb) in a metal between two points which differ…

The amount of heat energy absorbed or evolved at one of the junctions of a thermocouple when one-ampere current flows for one π second (one…

In 1834, a French scientist Peltier discovered that when the electric current is passed through a circuit consisting of two dissimilar metals, heat is evolved…

Neutral temperature is the temperature of the hot junction of a thermocouple at which the electromotive force of the thermocouple attains its utmost value when…

In 1821, German Physicist Thomas Johann Seebeck discovered that in a circuit consisting of two dissimilar metals like iron and copper, an emf is developed…

Applications of Joule heating: (i) Electric heating device Electric iron, electric heater, electric toaster are some of the appliances that work on the principle of…