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A line charge having a linear charge den...

A line charge having a linear charge density of ` 3 xx 10^-6 C/m` is placed as shown in figure. A dipole is placed on x-axis as shown. Find the charge q if it is subjected to a force of 4N.

A

`40/3 mu C`

B

`20/3 mu C`

C

`40/9 mu C`

D

`80/3 mu C`

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