## What is Z in W ZIt?

– In W = ZIt, Z means electrochemical equivalent.

– Its value is calculated by – Z = M / nF.

where, M = molecular mass, n = moles of electrons used, 1 F = 96500 C..

## What is equivalent weight example?

Equivalent Weight. The weight of a compound that contains ONE EQUIVALENT of a proton (for acid) or ONE EQUIVALENT of an hydroxide (for base). In this example, the magnitude of the equivalent weight of sulfuric acid is HALF of that of the molecular weight.

## What is Faraday’s 2nd Law?

Second law Faraday discovered that when the same amount is passed through different electrolytes/elements connected in series, the mass of the substance liberated/deposited at the electrodes in g is directly proportional to their chemical equivalent/equivalent weight ( ).

## What is statically induced emf?

1. STATICALLY INDUCED EMF. This type of EMF is generated by keeping the coil and the magnetic field system, stationary at the same time; that means the change in flux linking with the coil takes place without either moving the conductor (coil) or the field system.

## What does EMF mean?

Electric and magnetic fieldsElectric and magnetic fields (EMFs) are invisible areas of energy, often referred to as radiation, that are associated with the use of electrical power and various forms of natural and man-made lighting.

## What is Lenz’s Law equation?

According to Lenz’s law, when an electromagnetic field is generated by a change in magnetic flux, the polarity of the induced electromagnetic field produces an induced current whose magnetic field opposes the initial changing magnetic field which produced it. The formula for Lenz law is shown below: ϵ=−N∂ΦB∂t.

## What does Lenz’s law mean?

Lenz’s law, in electromagnetism, statement that an induced electric current flows in a direction such that the current opposes the change that induced it. … This law was deduced in 1834 by the Russian physicist Heinrich Friedrich Emil Lenz (1804–65).

## What is Faraday’s first and second law?

Faraday’s Laws of Electromagnetic Induction consists of two laws. The first law describes the induction of emf in a conductor and the second law quantifies the emf produced in the conductor.

## How is equivalent weight calculated?

The equivalent weight of an element is its gram atomic weight divided by its valence (combining power). Some equivalent weights are: silver (Ag), 107.868 g; magnesium (Mg), 24.312/2 g; aluminum (Al), 26.9815/3 g; sulfur (S, in forming a sulfide), 32.064/2 g.

## What is the equivalent weight of AgNO3?

equivalent weight of silver nitrate. AgNO3 – Mol. mass = 108 + 14 + 48 = 170g/mole !!! Equivalent weight = molar wt. / n- factor !!! and n factor for AgNO3 is 1 !!!

## What is Faraday’s law formula?

Faraday’s law states that the absolute value or magnitude of the circulation of the electric field E around a closed loop is equal to the rate of change of the magnetic flux through the area enclosed by the loop. … E∙∆r is the work done per unit charge by the electric field in moving the charge a distance ∆r.

## Why is Lenz’s law important?

Lenz’s law is an important concept in electromagnetism. It states that when a voltage is created by a change in magnetic flux, the induced voltage must create a current whose magnetic field is in opposition to the change which produces it.

## What is electrochemical equivalent Z?

The electrochemical equivalent, sometimes abbreviated Eq or Z, of a chemical element is the mass of that element (in grams) transported by 1 coulomb of electric charge. The electrochemical equivalent of an element is measured with a voltameter.

## How do you calculate equivalents?

Gram equivalent weight is numerically equal to the calculated equivalent weight. Eq = 98.08 / 2 = 49.04 g/eq. The gram equivalent weight of H2SO4 is 49.04 g/eq. Only half as much sulfuric acid than, for example, HCl, is needed to react something with an acid.

## What is motional EMF?

An emf induced by motion relative to a magnetic field B is called a motional emf and is given by. emf = Bℓv (B,ℓ, and v perpendicular) where ℓ is the length of the object moving at speed v relative to the field.

## Where is Faraday’s law used?

According to Faraday’s law, change in magnetic field gives rise to change in electric field and the converse of this is used in Maxwell’s equations. It is also used in musical instruments like an electric guitar, electric violin, etc.

## What is Faraday’s Law simple?

Faraday’s law of induction is a law of physics proposed by English physicist Michael Faraday in 1831. It is one of the basic laws of electromagnetism. … Faraday’s law of induction says that when a magnetic field changes, it causes a voltage, a difference in the electric potential that can make electric currents flow.

## What is Faraday’s third law?

Faraday’s third law of electromagnetic induction The sense of the induced electromotive force depends on the direction of the rate of the change of the field.