1.

vec(E )_(ax)andvec(E ) _(eq) represent electric field at a point on the axial and equatorial line of a dipole . If points are at a distance r form the centre of the dipole , for r> > a

Answer»

`vecE_(ax)=vecE_(eq)`
`vecE_(ax)=-vecE_(eq)`
`vecE_(ax)=-2vecE_(eq)`
`vecE_(eq)=2vecE_(ax)`

Solution :For a short dipole `(rgtgta):vecE_(ax)=-2vecE_(eq)`

`|vecE_(ax)|=((1)/(4piepsilon_(0)))(2P)/(R^(3))`
`|vecE_(eq)|=((1)/(4piepsilon_(0)))(p)/(r^(3))`


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