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The electric potential at a point in fre...

The electric potential at a point in free space due to a charge Q coulomb is `Qxx10^11` volts. The electric field at the point is:

A

`4piepsilon_0Qxx10^22 `volt/m

B

`12piepsilon_0Qxx10^20` volt/m

C

`4piepsilon_0Qxx10^20 `volt/m

D

`12piepsilon_0Qxx10^22` volt/m

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