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Assume that an electric field vecE=30x^2...

Assume that an electric field `vecE=30x^2hati` exists in space. Then the potential difference `V_A-V_O`, where `V_O` is the potential at the origin and `V_A` the potential at `x=2m` is:

A

`-80J`

B

`80 J`

C

`120 J`

D

`-120 J`

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