Request a call back

electric charges and field and flux
Asked by mamathakishore4862 | 03 Sep, 2021, 07:29: AM
Electric charges are of two types , i.e., having positive sign and negative sign .

SI units for charge is +Coulomb that is abbreviated as C
Fundamental magnitude of charge is charge on electron i.e. 1.602 × 10-19 C .

Charges of same sign repel each other and charges of opposite sign attracts each other.

Force between charges is given by Coulomb's law

F = K × ( q1 q2 ) / d2

where K = 1/(4π εo ) = 9 × 109 N m2 C-2 and εo is permittivity of free space.

------------------------------------------------

Electric field is force experienced by unit charge .

Since there is force of attraction or repulsion between charges that depends on their sign ,

charge distribution in space creates force on a test charge placed in region influenced by charge distribution.

This region influenced by charge distribution is known as electrostatic field .

Electric field strength or intensity of electric field is force experienced by unit test charge.

If a test charge q experiences a force F in electrostatic field , then intensity of electric field E is given as

E = F / q

SI unit of electric field is N/C

--------------------------------------------------------------------------------

Electric flux Φ in an area A  is defined  as    E × A = Φ , where E is uniform electric field in area A .

Using flux Φ , we describe electric field as Flux per unit area .

If electric field is not uniform , then flux Φ of electric field over a given area  is given as

where the integration is performed over given area A

Answered by Thiyagarajan K | 03 Sep, 2021, 09:16: AM
NEET neet - Physics
Asked by premprakash780014 | 17 Jan, 2023, 09:09: PM
NEET neet - Physics
Asked by ayazanwarneet | 09 Jan, 2023, 11:12: AM
NEET neet - Physics
Asked by abulkalam70174 | 18 Aug, 2022, 06:32: PM
NEET neet - Physics
Asked by siddarthamayuri | 23 May, 2022, 07:47: PM
NEET neet - Physics
Asked by mdd4246308 | 24 Dec, 2021, 12:32: AM
NEET neet - Physics
Asked by mamathakishore4862 | 03 Sep, 2021, 07:29: AM