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Calculate force on a dipole in the surrounding of a long charged wire as shown in the figure. |
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Answer» In the situation shown in figure, the electric field strength due to the wire, at the position of dipole as `E=(2klambda)/(r)` Thus force on dipole is `F=-p. (dE)/(dr)=-p[-(2klambda)/r^(2)]=(2kplambda)/r^(2)` Here -ve charge of dipole is close to wire hence net force an dipole due to wire will be attractive. |
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