1.

What is the magnitude of electric intensity due to a dipole of moment `2xx10^(-8)C-m` at a point distant `1 m` from the centre of dipole, when line joining the point to the center of dipole makes an angle of `60^(@)` with diople exis ?

Answer» Here, `p = 2xx10^(-8) C-m, r = 1 m`,
`theta = 60^(@), E = ?`
`E = (p)/(4pi in_(0) r^(3)) sqrt(3 cos^(2) theta+1)`
`= (2xx10^(-8)xx9xx10^(9))/(1^(3)) sqrt(3 cos 60^(@) + 1)`
`E = 238*1 N//C`


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