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The electric potential at a point in fre...

The electric potential at a point in free space due to charge Q coulomb is `Q xx 10^11` volts. The electric field at that points is

A

`4piepsilon_0Q xx 10^20 V m^-1`

B

`4piepsilon_0Q xx 10^22 V m^-1`

C

`12 pi epsilon_0Q xx 10^20 V m^-1`

D

`12 pi epsilon_0Q xx 10^22V m^-1`

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