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The electric field in a region is given ...

The electric field in a region is given by `vecE = (A/x^3) vecI.` Write a suitable SI unit for A. Write an experssion for. the potential in the region assuming the potential at. infinity to be zero.

A

`(M)/(2x^2)`

B

`Mx^2`

C

`(M)/(3x^4)`

D

`(M)/(x^2)`

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