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

Mercury is poured into a u-tube, Mercury is poured into a U-tube as shown i...

Mercury is poured into a U-tube as shown in Figure given below. 100g of water is then poured into the right hand side of the tube. The density of mercury is 13.6g/cm 3 . What heigh

What are the basic components of lead acid cell, What are the basic compone...

What are the basic components of Lead Acid cell? Ans. Basic components of Lead Acid cells are: a) Positive Plates, which are tubular n shape, prepared by PBO 2 b) Negativ

Simultaneity principle, Simultaneity principle The principle that all ...

Simultaneity principle The principle that all of the frames of reference will have invariant simultaneity; i.e., two events perceived as simultaneous (that is, having the simi

Quantum theory of light, Quantum Theory of Light: Wave theory failed to...

Quantum Theory of Light: Wave theory failed to describe some new effects in 19th century. A German Physicist Max Plank gave theory about the nature of light. 1. Light is emi

Define critical temperature, Q. Define critical temperature. The tempe...

Q. Define critical temperature. The temperature at that electrical resistivity of the material suddenly drops to zero and the material changes from normal conductor to a super

Define marine application, Marine Application:- Suitably designed one o...

Marine Application:- Suitably designed one or double speed squirrel cage induction motors are used.

Measure of elapsed period using the si unit, Q. Measure of elapsed period u...

Q. Measure of elapsed period using the SI unit? Answer:- 1. This is the question that each true scientist dreads to be asked especially in a public setting by extremely in

Electrical power, Electrical power: Electrical power (symbol P) is the ...

Electrical power: Electrical power (symbol P) is the rate at which work is done or the rate of conversion of energy by an electrical system. The SI unit of power is the

Explain angle of deviation, Angle of Deviation: When a ray of light pas...

Angle of Deviation: When a ray of light passes by a prism, It changes it's path inside the prism and forms an angle with the emergent ray. This angle is called as the angle of

Equilibrium on an inclined plane, A 250 N crate is sitting on a 30 degree i...

A 250 N crate is sitting on a 30 degree inclined plane. The frictional force is larger than the component of the crate's weight parallel to the inclined plane, so that the crate do

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