Electrostatics

Joule’s law is verified using Joule’s calorimeter. Joule effect and Joule’s law are any of several different physical effects discovered or characterized by English physicist…

In a conductor, the free electrons are always at random motion making collisions with ions or atoms of the conductor. When a voltage V is…

The lead acid accumulator consists of a container made up of hard rubber or glass or celluloid. The container contains dilute sulphuric acid which acts…

A Leclanche cell consists of a carbon electrode packed in a porous pot containing manganese dioxide and charcoal powder (Figure). The porous pot is immersed…

Daniel cell is a primary cell which cannot supply steady current for a long time. It consists of a copper vessel containing a strong solution…

Applications of secondary cells: The secondary cells are rechargeable. They have very low internal resistance. Hence they can deliver a high current if required. They…

The advantage of secondary cells is that they are rechargeable. The chemical reactions that take place in secondary cells are reversible. The active materials that…

The cells from which the electric energy is derived by irreversible chemical actions are called primary cells. The primary cell is capable of giving an…

Verification of Faraday’s Second law of electrolysis Faraday’s second law of electrolysis states that, when the same quantity of electricity is passed through several electrolytes,…

Verification of Faraday’s first law of electrolysis First Law: The mass of a substance liberated at an electrode is directly proportional to the charge passing…