Point charge: When size of a body is much smaller than the distance under consideration, then the size of the body may be ignored and the charged body is called point charge.
TYPES OF CHARGE DISTRIBUTION
1. Linear Charge distribution: It is a charge distribution along a curve or linear object.
Eg. Charge on a thin wire, Charge on a thin ring etc.
👉 Linear charge density(λ) : Charge per unit length of the object is called linear charge density.
It is given by: λ = Q/l
SI unit of Linear charge density λ is C/m.
2. Surface Charge distribution: It is a charge distribution spread over the surface of an object.
Eg. Charge on a metal sphere, Charge on a plane sheet etc.
👉 Surface charge density(σ): Charge per unit area of the object is called surface charge density.
It is given by: σ = Q/A
SI unit of Surface charge density σ is C/m2.
3. Volume Charge distribution: It is a charge distribution in complete volume of the object.
Eg. Charge in a nonconducting sphere etc.
👉 Volume charge density(ρ) : Charge per unit volume of the object is called volume charge density.
It is given by: ρ = Q/V
SI unit of Volume charge density ρ is C/m3.
Area Vector
Area of an object is considered as a vector quantity. Its direction is always normally outward to the surface of the body.
For more interesting Videos of Physics follow our YouTube Channel “PHYSICS WITH UMESH RAJORIA“
✅Sharpen Your Pencil ✍️
Q. What charge would be required to electrify a sphere of radius 25 cm, so as to get a surface charge density of 3/𝞹 C/m2 ?
Hello Students,
Physics is the most crucial subject for all the students of class 11th, 12th and also for the students who are preparing for NEET or JEE. Physics is very important to understand many higher level concepts, which are derived from the concepts that we learn in class 11th and 12th.
So better understanding of all the concepts in physics is very necessary, not only to get good marks in physics exam but also to learn physics more effectively.
Get Physics Chemistry & Biology Notes
- 50000+ Students have Ordered so far !
- ⭐⭐⭐⭐⭐ 9.7/10 Average Rating
- Unlimited Access
Grab Everything Now At lowest Price
Just Pay ₹ 99/-
Benefits of Getting Notes e-Books
- Notes covers complete syllabus of Physics Chemistry & Biology for class 10, 11, 12 and NEET/JEE.
- Written in clean and readable handwriting.
- Revised every year with updated syllabus and exam pattern.
- It can save your time and cost which you spend for individual subject coaching.
- Notes are also beneficial at the time of revision.
- Notes are properly indexed with page numbers.
- Special Focus on the topics which carry more weight in exams.
Offer Ends Soon…
Myself Umesh Rajoria and I am a Physics teacher. I have 15 years teaching experience of physics.
You will be happy to know that i have prepared class 12 physics notes according to the latest NCERT syllabus for CBSE and other state board students.
👉These class 12 Physics notes help the students to understand the concept of Physics easily and retain the formulas and derivations for a longer time.
👉All the diagrams, formulas, derivations and solved numerical are included in these Physics Notes . These notes will be very useful during the preparation of 12th board exams and save most of the time of the students.
🔷 Dear Students,
If You Like the Information and Notes then please Comment and share the post. Which physics topic you want to know please tell us by commenting. I will surely reply your comment. Thanks 🙂
