problems involving electricity

The principle of quantisation of electric charge states that "in nature there is a smallest amount of charge and all other charges are integral multiples of this smallest unit ". That is, if e is the minimum charge then the total charge on the body is equal to ne where n is an integer. T..

. If the full-scale deflection of the galvanometer occurs for current I o and the ammeter is to have a range I m a x , we have The potentiometer is a device to compare potentials. Since the method involves a condition of no current flow, the device can be used to compare emfs of two sourc..

Current Electricity - One of the greatest discoveries of the eighteenth century was the discovery of electricity. Think of life today without electricity and you will realize the part electricity plays in our day to day life. Static charges will not heat a to..

Certain reactions take place with the help of an electric current.Example: Decomposition of acidulated water to give hydrogen and oxygen g..

In the case of electrochemical cells, free energy change, D G is related to the electrical work done in the cell. If E is the e.m.f of the cell and n mole of electrons are involved, the electrical work done will be D G = -nFE c e l l , where F is Faraday constant..

Processes Involved in Transport - There are some physical principles and biological processes that explain the transport of materials across the plant body. They are as follo..

It is a physical process that involves the movement of solute particles from the region of their higher concentration to the region of their lower concentratio..

It is a physical process that involves the movement of solute particles from the region of their higher concentration to the region of their lower concentration. Transport of materials within the cell is by diffusion. The entry of carbon dioxide into the stomata is by diffusio..

Equilibrium Involving Physical Changes - Substances exist in three states: solids, liquids and gases. The following types of equilibriums exist in three state..

It is so called as it takes place only in the presence of sunlight and hence is a light-dependent reaction. Robin Hill, an English biochemist conducted studies on isolated chloroplasts to understand the mechanism of light reaction..