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a short dipole is placed at a distance x from centre O on the axis of a ring of radius R and charge Q is uniformly distributed over it. the net force acting on the dipole is?

a short dipole is placed at a distance x from centre O on the axis of a ring of radius R and charge Q is uniformly distributed over it.
the net force acting on the dipole is?

Grade:12

5 Answers

rajula vineet reddy
33 Points
9 years ago
the answer is F=2Qp/((R^2+x^2)^3/2) where pis the dipole moment.
ria
35 Points
9 years ago
its the wrong answer..... i wasnt even amng d options.... answer is KQP (R^2 - 2x^2 ) / (R^2 + x^2) ^5/2
ria
35 Points
9 years ago
hey if u could just tell me dat how woul u differentiate x/ (R^2 +X^2) wrt X
rajula vineet reddy
33 Points
9 years ago
ya the answer is KQP(R^2-2x^2)/(R^2+x^2)^5/2 use the formula F=p(dE/dx) and use d/dx (u/v) form......
ria
35 Points
9 years ago
thnx

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