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Two point dipoles of dipole moment p and R are at a distance x from each other and p is parallel to R .then the force between the dipoles is (a)k4pr/x^4 (b)k3pr/x^4 (c)k6pr/x^4 (d)k8pr/x^4

Two point dipoles of dipole moment p and R       are at a distance x from each other and p is parallel to R .then the force between the dipoles is (a)k4pr/x^4 (b)k3pr/x^4 (c)k6pr/x^4   (d)k8pr/x^4
 

Grade:12

1 Answers

Abhishek Kumar
askIITians Faculty 255 Points
7 years ago
Field due to a dipole = kp/x3
Force = divergence(R.E) = So, 3kpR/x3
Divergence = differention, if only one variable is involved (here x)

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