Mycollegebag
  • Study Materials
    • Kid's Worksheets >
      • English Worksheets
      • Maths Worksheet
      • EVS Worksheets
      • Hindi Worksheets
      • LKG Worksheets
      • UKG Worksheets
      • LKG Syllabus
    • NCERT Solutions >
      • Class 10th NCERT Solution
      • Class 11 NCERT Solution
      • Class 12 NCERT Solution
    • NCERT Books
    • HC Verma Solutions
    • H C Verma Solution for Short Questions
    • RD Sharma Solution >
      • RD Sharma Class 12
      • RD Sharma Class 11
      • RD Sharma Class 10
      • RD Sharma Class 9
      • RD Sharma Class 8
      • RD Sharma Class 7
      • RD Sharma Class 6
    • RS Aggarwal Solutions
    • OP Tandon Solution
    • IE Irodov Solutions
    • Lakhmir Singh Solution
    • ML Khanna Solution
    • Resnick Halliday Solution
    • CBSE Notes
  • Career
    • Engineering Resume Samples
    • Management Resume Samples
    • Graduate Resume Samples
    • Teachers Resume
    • Resume Builder
    • GMAT Papers
    • KVPY Papers
    • IBPS Question Papers
    • GRE Papers
    • SBI PO Papers
    • SAT Papers
    • Toefl Papers
    • ACT Papers
    • IELTS Papers
  • Class 10
    • CBSE Class 10
    • ICSE Class 10 Papers
    • BSEH Class 10 previous Papers
    • AP SSC Class 10 previous Papers
    • Kerala SSLC Class 10 previous Papers
    • RBSE Class 10 previous Papers
    • PSEB Class 10 previous Papers
    • Goa SSC Class 10 previous Papers
    • UP Class 10 previous Papers
    • Bihar Class 10 previous Papers
    • WB Class 10 previous Papers
    • Assam Class 10 previous Papers
    • Arunachal Class 10 previous Papers
    • Manipur Class 10 previous Papers
    • Nagaland Class 10 previous Papers
    • Mizoram Class 10 previous Papers
    • Sikkim Class 10 previous Papers
    • TBSE Class 10 previous Papers
    • MP Class 10 previous Papers
    • CG Class 10 previous Papers
    • Odisha Class 10 previous Papers
    • MH Class 10 previous Papers
    • GSEB Class 10 previous Papers
    • KSEEB SSLC Class 10 previous Papers
  • Class 12
    • CBSE Class 12 Question Papers
    • ISC Previous Year Paper >
      • ISC English
      • ISC Hindi
      • ISC Physics
      • ISC Chemistry
      • ISC Biology
      • ISC Accountancy
      • ISC Mathematics
      • ISC Economics
      • ISC Commerce
      • ISC Computer Science
    • UP Board Class 12
    • Bihar Board Class 12th Paper
    • MP Board Papers
    • CG Board Class 12
    • TN Board Class 12
    • MH HSC papers
    • Karnataka Board HSC Papers
    • WB Class 12 Papers
    • Kerala HSC Papers
    • Himachal Class 12th Paper
    • Assam Class 12th Paper
    • UK Board Class 12th Paper
    • RBSE Class12 Paper
    • Gujarat Board Class 12 Papers
    • Goa Board Class 12th Paper
    • Punjab Class 12th Paper
    • AP Board Class 12 Papers
    • Haryana Board Class 12th Paper
    • Delhi Board Class 12th Paper
    • Telangana Board 12th Papers
    • Jharkhand Class 12th Paper
    • Jammu & Kashmir Class 12th Paper
    • Orissa Class 12th Paper
  • Medical
    • AIIMS Paper
    • JIPMER Paper
    • AFMC MBBS Question Papers
    • CMC MBBS Question Papers
    • AIPMT Papers
  • Engineering
    • JEE Main Question Papers
    • AIEEE Question Paper
    • BITSAT Papers
    • UPTU-UPSEE Papers
    • MHT CET Papers
    • MP PET Papers
    • CG PET Papers
    • KCET Papers
    • TS EAMCET Papers
    • AP EAMCET Papers
    • KEAM Papers
    • GOA CET Papers
    • GUJCET Papers
    • RPET Papers
  • MBA
    • XAT Papers
    • CAT Papers
    • IIFT Papers
    • MAT Papers
    • SNAP Papers
    • CMAT Papers
    • NMAT Papers
    • IGNOU Open MAT Papers


CBSE Class 12th Physics Notes for Chapter 1 Electric Charges and Fields

7/27/2018

4 Comments

 
​CHAPTER 1 ELECTRIC CHARGES AND FIELDS
 
  • Electric and magnetic forces determine the properties of atoms, molecules and bulk matter.
 
  • There are two types of charges: positive and negative. Charge on a glass rod rubbed with silk is positive and that on a plastic rubbed with fur is negative.
 
  • Like charges repel each other and unlike charges attract each other.
 
  • Conductors allow movement of electric charge through them but insulators do not.
 
  • In metals, the mobile charges are electrons. In electrolytes both positive and negative ions are mobile.
 
  • Electric charge has three basic properties:
    • Quantization: Quantization of electric charge means that total charge of a body is always an integral multiple of a basic quantum of charge.
    • Additivity: Additiviy of electric charge means that the total charge of a system is the algebraic sum of all individual charges in the system.
    • Conservation: Conservation of electric charges means that the total charge of an isolated system remains unchanged with time.
 
  • Coulomb’s Law: This law states that the mutual electrostatic force between two point charges is proportional to the product of the charges and inversely proportional to the square of the distance separating them.
 
The ratio of electric force and gravitational force between a proton and an electron is 
Picture
  • Superposition principle: The principle based on the property that the forces with which two charges attract or repel each other are not affected by the presence of a third (or more) additional charge(s).
 
  • The electric field E at a point due to charge configuration is the force on a small positive test charge placed at the point divided by the magnitude of the charge.
  • An electric field line is a curve drawn in such a way that the tangent at each point on the curve gives the direction of the electric field at that point. Some important properties of field lines are:
    • Field lines are continuous curves without any breaks.
    • Two field lines cannot cross each other.
    • Electrostatic field lines start at positive charges and end at negative charges- they cannot form closed loops.
    • The relative closeness of field lines indicates the relative strength of electric field. They crowd near each other in regions of strong electric field and are far apart where the electric field is weak.
 
  • An electric dipole is a pair of equal and opposite charges separated by some distance.
 
  • Gauss’s Law: The flux of electric field through any closed surface S is 1/ε0 times the total charge enclosed by S.
​
4 Comments
Dev
12/2/2018 11:17:29 pm

Nice

Reply
ASHISH choudhary
6/26/2019 08:49:31 am

Nice

Reply
mehraj unnisa
6/28/2020 05:50:36 am

usefulll..

Reply
SHIVKANT SAH
6/29/2020 08:59:32 pm

I want 12 physics complete class note to study

Reply



Leave a Reply.

    Categories

    All
    Accountancy
    Biology
    Business Studies
    CBSE Class 10 Biology Notes
    CBSE Class 10 Chemistry Notes
    CBSE Class 10 Maths Notes
    CBSE Class 10 Physics Notes
    CBSE Class 11 Biology Notes
    CBSE Class 11 Chemistry Notes
    CBSE Class 11 Maths Notes
    CBSE Class 11 Physics Notes
    CBSE Class 12 Biology Notes
    CBSE Class 12 Chemistry Notes
    CBSE Class 12 Maths Notes
    CBSE Class 12 Physics Notes
    CBSE Class 7 Maths Notes
    CBSE Class 7 Science Notes
    CBSE Class 8 Maths Notes
    CBSE Class 8 Science Notes
    CBSE Class 9 Biology Notes
    CBSE Class 9 Chemistry Notes
    CBSE Class 9 Maths Notes
    CBSE Class 9 Physics Notes
    Chemistry
    Class 6 Maths Notes
    Class 6 Science Notes
    Computer Science
    Economics
    English
    Geography
    Hindi Core
    Hindi Elective
    History
    Maths
    Physics
    Website And Multimedia

Subscribe to Get Updates

Subscribe

Board Exams

CBSE Class 10 Question Papers

CBSE Class 12 Question Papers

ICSE Class 10 Question Paper

​ISC Class 12 Question Papers

Resume

Engineering Resume

Management Resume

General Graduate Resume

Teacher's  Resume

JEE Question Papers

BITSAT  Question Papers

NEET UG Question Papers

JIPMER Question Papers

AIIMS Question Papers


​

GRE Question Papers

CAT Question Papers

XAT Question Papers

MAT Questions

​GMAT Questions

NCERT

Solutions

Pre School Worksheets

​NCERT Class 10 Solutions

HC Verma Solutions

UKG Worksheets

Privacy Policy

​NCERT Class 11 Solutions

RS Aggarwal Solutions

LKG Worksheets

Terms & Conditions

NCERT Class 12 Solutions​

RD Sharma Solutions

Nursery Worksheets

Sitemap

CBSE Class 10 Notes

IE Irodov Solutions

LKG Syllabus

Contact Us

CBSE Class 12 Notes

Resnick Halliday Solutions

© mycollegebag.in 2020, All Rights Reserved