Showing posts from March, 2022

What is Faraday's law of Electrolysis?

Faraday's law of electrolysis The relationship between the amount of electric charge passing through an electrolyte and the amount of substance deposited at the electrode was introduced by Faraday in 1834 as the laws of electrolysis. 1. first law The mass of the substance deposited or liberated at any electrode is directly proportional to the amount of charge passed" Let this proportionality be called w = zq.  can be made in equality by Where z is the proportionality constant called the electrochemical equivalent.  It is the mass of matter in grams that is deposited or released by passing a coulomb of charge. 2. Second Law The mass of a substance that is deposited or liberated at an electrode when a certain amount of charge is passed is directly proportional to its chemical equivalent mass". that is w a E where w is the mass of the substance in grams while E is its chemical equivalent weight per gram equivalent. This law can be explained as follows. Consider three reactio

What is electomotive force (EMF) ?

Electromotive Force (EMF)  is that the short sort of Electro drive which is that the driving force of the electrochemical cell. EMF is that the electric potential between the electrodes of an electrochemical cell. Electromotive Force EMF EMF = E1 - E2 where, E1 is the electrode potential of the more negative metal (anode) E2 is the electrode potential of the more positive metal (cathode) Electrode potential is the development of potential difference in the interface of electrode and electrolyte(electrolyte basically is an ionic conductor), when a metal (electrode / electronic conductor) is immersed in an electrolyte.

On what principle does the bulb work?

The bulb works on the principle of incandescent It has a thin filament (wire) through which when the current flows, it heats up and starts giving light. The emission of light due to heating is called incandescence. Structure of Bulb Incandescent lamp Incandescent lamp or incandescent lamp is colloquially called bulb. It generates light by incandescence. The emission of light due to heating is called incandescence. It has a thin filament (wire) through which when the current flows, it heats up and starts giving light. The filament is kept inside the glass bulb so that the atmospheric oxygen cannot reach the very hot filament and thus cannot weaken the filament by acting. Features Incandescent lamps are made of various sizes, voltages and power. Bulbs ranging from 1.5 V (torch bulb) to 300 V are readily available. Similarly, bulbs ranging from 1 watt to thousands of watts are made. Incandescent bulbs have the characteristic that their manufacturing costs are very low. Multi Colour

On what principle does an electric heater work?

Electric Heater works on Joule's law of heating . When an electric current flows through a resistor , it heats up, the energy converted as heat is proportional to the square of the value of the current and the value of the barrier. That is, there should be such a wire, whose resistance is very high and it does not burn even when it is hot. Room Heater Electricity is a power. Just as a stream of water flows, so does electric power. But it has some rules.  1. It flows / flows through metal and matter. Some metals strongly oppose its flow. Some metals do not resist at all. 2. Metals which resist electric current are used in heaters. When a metal opposes the flow of electricity, heat is generated because of the opposition. 3. For the heater, a metal wire is used to resist the flow of electricity. As electric current is released in the wire - the wire heats up. Spring Element Heater 4. The construction of the heater The anti-current wire is kept in a tube.  The wire should not have dir