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Two short dipoles p hat k & (p)/(2) hat(...

Two short dipoles `p hat k` & `(p)/(2) hat(k)` are located at `(0,0,0)` & `(1m,0,2m)` respectively. The resultant electric field due to the two dipoles at the point `(1m,0,0)` is :

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The correct Answer is:
`(-7)/8 kphat(k)`
Electric field due to dipole `vec(P)=-(KP)/1^(3)xxhat(k)`
Electric field due to dipole `vec(P)/2=+(2KxxP/2)/2^(3)hat(k)`
Resulatnt electric field `=-7/8 Kphat(k)`
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