Anyone here to help me:S

ten dipoles, each consisting of two charges +- 19 uC, are located within a spherical surface, the radius of which is 2 mm. What is the flux density through the sphere

i got 4.1*10^6 N-m^2/C ???????????

Question

Anyone here to help me:S

ten dipoles, each consisting of two charges +- 19 uC, are located within a spherical surface, the radius of which is 2 mm. What is the flux density through the sphere

i got 4.1*10^6 N-m^2/C ???????????

anonymous · Answer

flux is zero man!!!

anonymous · Answer

since there are dipoles inside......net charge inside is zero!
apply gauss law......flux is zero!

anonymous · Answer

getting?

anonymous · Answer

no:S

anonymous · Answer

ok....do u know gauss law for electrostatics?

anonymous · Answer

yes

anonymous · Answer

gauss law states that net flux through a closed surface is NET CHARGE ENCLOSED by that closed surface...divided by epsilon nought......isnt it right?

anonymous · Answer

so...u have dipoles here.....dipole means 2 charges , 1+ve,1-ve....so net charge of a dipole is zero......so even if u have 100 dipoles..net charge wud be zerro...so since there are only dipoles inside ur closed surface....net charge is zero..

anonymous · Answer

since net charge enclosed by the closed surface is zero.....flux is zero by the gauss law....get it??????

anonymous · Answer

yes thanks