coulomb's law class 12 Physics | NCERT Chapter 1 | CBSE NEET JEE | हिंदी मे

coulomb's law class 12 Physics | NCERT Chapter 1 | CBSE NEET JEE | हिंदी मे
Is video me Coulomb's law ke baare me full detail me samjhaya gaya hai ---
According to Coulomb's law
The force of attraction or Repulsion between two stationary points charge is directly proportional to the product of the quantities of both the charges and Inversely Proportional to the square of the distance between them and along line joining of both charges
𝐟∝𝐪_𝟏 𝐪_𝟐 ……(𝐢)
𝐟∝𝟏/𝐫^𝟐 ……(𝐢𝐢)
𝐟∝(𝐪_𝟏 𝐪_𝟐)/𝐫^𝟐
𝐟=𝐤 (𝐪_𝟏 𝐪_𝟐)/𝐫^𝟐
𝐤=𝐜𝐨𝐧𝐬𝐭𝐚𝐧𝐭=𝟗×𝟏𝟎^𝟗 (𝐍𝐦^𝟐)/𝐪^𝟐 and depend on Medium
Case I : - When charges are kept in vacuum or Air
𝐟=𝟏/(𝟒𝛑𝜺_𝟎 ) (𝒒_𝟏 𝒒_𝟐)/𝐫^𝟐
𝛆_𝟎=𝐏𝐞𝐫𝐦𝐢𝐭𝐭𝐢𝐯𝐢𝐭𝐲 𝐨𝐟 𝐕𝐚𝐜𝐮𝐮𝐦
𝛆_𝟎=𝟖.𝟖𝟓×𝟏𝟎^(−𝟏𝟐) 𝐪^𝟐/𝐍𝐦^𝟐
𝐃𝐢𝐦𝐞𝐬𝐢𝐨𝐧 𝐟𝐨𝐫𝐦𝐮𝐥𝐚 𝐨𝐟 𝛆_𝟎= 𝐌^(−𝟏) 𝐋^(−𝟑) 𝐓^𝟒 𝐀^𝟐
Case II : - When charges are kept in any medium (glass , oil , water) which dielectric is k then
𝐟=𝟏/(𝟒𝛑𝛆_𝟎 𝐤) (𝐪_𝟏 𝐪_𝟐)/𝐫^𝟐
𝛆_𝟎 𝐤= 𝛆=𝐏𝐞𝐫𝐦𝐢𝐭𝐢𝐯𝐢𝐭𝐲 𝐨𝐟 𝐌𝐞𝐝𝐢𝐮𝐦
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