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

Specific heats of gases, Specific heat of a gas is numerically equivalent t...

Specific heat of a gas is numerically equivalent to the amount of heat essential to raise the temperature of unit mass of gas by 1 0 C. In order to raise the temperature of unit ma

Letter, I am responding to your letter of about six weeks ago asking for an...

I am responding to your letter of about six weeks ago asking for an adjustment on your wireless hub, model WM39Z. We test all our products before they leave the factory; therefore,

Kirkwood gaps, Kirkwood gaps (Kirkwood): Gaps in the asteroid belt, ca...

Kirkwood gaps (Kirkwood): Gaps in the asteroid belt, caused through resonance effects from Jupiter. Identical gaps exist in Saturn's rings, because of the resonance effects of

Explain constant voltage system, Explain Constant voltage system Const...

Explain Constant voltage system Constant voltage system :  In this process voltage is kept constant but results in very huge charging current in the starting when the back emf

Mechanical stressing, Mechanical stressing: When a material undergoes a me...

Mechanical stressing: When a material undergoes a mechanical treatment, its resistivity changes due to mechanical distortion of the crystal structures. The localized strain produc

Define wave velocity , It is the distance travelled by the disturbance in s...

It is the distance travelled by the disturbance in single time period. It only relays on the properties of the medium and it independent of time and position.

#PhysicsofVolleyball, Is there a way that you can gain potential energy and...

Is there a way that you can gain potential energy and release kentic energy in Volleyball?

Illustrate properties of electromagnetic waves, Q. Illustrate what two prop...

Q. Illustrate what two properties of electromagnetic waves are used to attach info to radio signals? Answer:- By changing the amplitude of a radio wave you can encode info

Nuclear physics, why electrons do not exist in nucleus

why electrons do not exist in nucleus

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