Class 12 Physics Ch 3

CBSE Class 12th Chapter 3 Current Electricity pdf Download

Class 12 Notes Ch 3 Revision Notes
Hey there! We're working hard to help students with their studies. The NCERT Class 12 Physics Revision Notes results are top-notch and follow the latest CBSE Syllabus 2023-24. The NCERT PDF on Current Electricity Physics is a great resource for understanding the subject and taking notes. You can access Chapter 3 of Class 12 Physics for free through the link provided.

Class 12 physics Ch 3 Current Electricity Solutions Hey there! Need some help with your physics notes? Check out our Class 12th Revision Notes - they're simple, perfect for toppers, and available for quick revision. You can download our PDF notes or watch our online YouTube classes. We've also got chapter summaries and the most important notes to help you out. 12th board Exam notes , Physics wallah alakh Pandey pdf notes  Electric Potential CBSE Class 12 Physics Notes 

Current Electricity Class 12 Notes Chapter 3

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CBSE Class 12 Physics Ch 3 Notes Current Electricity Notes

Electric Current: Pate of flow of electric charge through a Conductor is Called electric Current. 

It is measured as the amount of electric charge passing through any cross-section of conductor in unit time. Denoted by I.

I = It if electric Current ductor is steady. 1= it is not steady. 

SI Unit of Ampere (A). Current

Define ONE Regen through its Done Coulomb of charge flows cross-section in one any second-

I= 1C =

1 Ampere IA

Movement of Free Electrons in a Conductor At any temperature, electrons in a metal move randomly in all direction Like Coel Gas Particles.

fig shows an electron moving from A to B through repeated collision & straight Lines travel. between inclusion. 

This Speed is Called Thermal velocity of free electrons Avenage Thermal velocity of free electrons in any direction remain zelo. Maug 20

 When a potential difference is applied across the ends of a Conductor the free electron it move with an average velocity opposite to the direction

of applied electric field, which is, Called Drift velocity of free electrons. Note: Order of Drift velocity. - 10 mls

r_{1} = r_{2}

Freid Relaxation Time: An time between two successive Collision (Collision of e with Ions) is Called Relaxation It is denoted by t

Let us consider a conductor of Length I and Area of tion A across which a potential Difference V Cross is applied.

Total No of free electron in Conductor is k

N = number density Volume of Conductor Ag(62)

N= nAL

force on the electrons acceleration of the electron

Thus drift velocity in teams of relaxation time. =0 Aug Thermal velocity V

Relation between Current & Drift Velocity from figure (C) Total No of electrons in a Conductor is N MAL

Time in which an election move from P to Quail N free electrons pass through cross sect =| t = l

Important Class 12 Physics Revision Notes PDF Free download 

Class 12 physics Chapter 3 Current Electricity is an important study material for the Students who are presently studying in CBSE 12th standard
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