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

Electric lines of force, Definition: The electric field in a region is show...

Definition: The electric field in a region is shown by continues lines (also known as lines of force). Field line is an imaginary line along which a positive test charge will move

Determine magnetic field outside infinitely long wire, An infinitely long w...

An infinitely long wire carries a current of three amps. The magnetic field outside the wire: a) Points radially away from the wire b) Points radially inward c) Circ

OPTICS, How do I make a terrestrial telescope?

How do I make a terrestrial telescope?

Visible light, how can sensitivity curve b measured?

how can sensitivity curve b measured?

What is direction of the current, Q. What is direction of the current? ...

Q. What is direction of the current? The path of the magnetic field at the centre of a horizontal current-carrying loop of wire is straight downward. The magnetic field is affe

Nucleus has negative mass defect, Tell me Is it possible that a nucleus has...

Tell me Is it possible that a nucleus has negative mass defect    If the nucleus has a mass defect it is likely that the strong force and the weak force have sustained a main

Dielectric material: plastics, Plastics are polymers, meaning they are made...

Plastics are polymers, meaning they are made up of molecules from many different elements. By utilizing different combinations, new polymers are made that can be manipulated from m

Equivalence principle, Equivalence principle: The fundamental postulat...

Equivalence principle: The fundamental postulate of A. Einstein's general theory of relativity, that posits acceleration is indistinguishable fundamentally from a gravitationa

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