Explain on Seebeck Effect
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…
Physics
Describe Some Applications of Joule Heating
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…
Verification of Joule’s Law using Joule’s Calorimeter
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…
Descreibe Joule’s Law of Heating Effect
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…
Explain on Lead Acid Accumulator
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…
Describe on Leclanche Cell
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…
Describe on Daniel Cell
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
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…
Explain on Secondary Cells
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…
What is Primary Cell?
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…
Load More