IIT JEE , AIEEE Forum - Physics , Electricity

divalli_oct07

WHAT IS THE ELECTRIC FIELD OF A METAL SLAB WHOSE TOTAL CHARGE ON ONE OF THE SIDES IS 'Q' AND SIDE LENGTH ' L' ?

rini

electric field inside a metal body is zero.

a5hw1n_5

if one of the sides has a charge Q the other side must also hav a charge Q.

so therefore the e field on both sides is is of the same mag.

electric field due to a charged metallic slab at any pt outside it is given by

E=

/2

_o where

is the surface charge density.

therefore

= Q/area= Q/L²

hence E= Q/2

_oL²(note- this is applicable only for a pt nearer to the centre, ie it is not app for pts at the sides of the slab)

at any pt inside the slab E=0

Mr.IITIAN007

I think the electric field on both of the length-based sides of the metal slab is q / 2 ebsilon not if the slab is placed in vaccum or air.

deepak_agarwal

electric field is calculated by a metal body ata point...so please menion the poin at which u wanna noe the field..in case it is outside then a5hwln has done correctly

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