Cell emf, Physics

Assignment Help:

CELL EMF:

The size of a cell has no bearing on the emf that it will produce, the generated emf being determined solely by the materials used in its construction. Another point to note is that the potential difference, or voltage measured across the terminals of a cell, is not the same as the emf generated by the cell. The terminal voltage of a cell depends on the:

  • internal resistance of the cell.
  • size of the discharge current.
  • charge state of the cell.
  • The size of the discharge current. As a general rule, whenever a cell is providing current, the terminal voltage will be less than the cell emf. The larger the discharge current, the greater the difference between the cell emf and its terminal voltage.
  • The internal voltage of the cell. All sources of electricity have internal resistance which affects the terminal voltage, this will be examined in more detail later in the notes.

 

 


Related Discussions:- Cell emf

Uses of radio isotopes, Uses of Radio Isotopes: Industries: 1. Radio...

Uses of Radio Isotopes: Industries: 1. Radio active isotopes are used to detect leakage in pipes. 2. It estimates weak and tear machine tools. 3. It is used to check t

Crystal growth, The fabrication of discrete and integrated circuit solid st...

The fabrication of discrete and integrated circuit solid state devices requires semiconductor crystals with impurity concentrations as low as possible and crystals that contain ver

Write a mathematical expression for refractive index, Write a mathematical ...

Write a mathematical expression for refractive index of the material of a prism in terms of its angle. Is the mathematical expression true for all positions of the prism?

Construction and working of nicol prism, Briefly explain with principle, th...

Briefly explain with principle, the construction and working of Nicol prism. Why the angle of incidence on Nicol prism would be around 14 o .

Classification of conducting materials, Classification of conducting materi...

Classification of conducting materials: Electrical resistivity of a conducting material or conductor ranges from 10 -8 to 10 -3 ohm-m. A good conducting material should have

Electrostatic, why can one ignore quantization of charge when dealing with ...

why can one ignore quantization of charge when dealing with macroscopic charges

Determine total bond dissociation energy of the reactants, Given that dH fo...

Given that dH for the reaction is -92.2 kJ mol-1, which is larger, the total bond dissociation energy of the reactants or the total bond dissociation energy of the products?

Explain the term critical frequency, Explain the term 'critical frequency' ...

Explain the term 'critical frequency' in relation to sky wave propagation of electromagnetic waves. On a particular day, the maximum frequency reflected from the ionosphere is

Is the common end is important, Is the common end is important? Even th...

Is the common end is important? Even though manufacturers place extra attention on fibers and illuminators the common end is a very important piece for the correct operation of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd