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The gravitational field in a region is given by `vecE=-(20Nkg^(-1))(hati+hatj)`. Find the gravitational potential at the origin `(0,0)` in `J kg^(-1)`

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The gravitational field in a region is given by `vecE=-(20Nkg^(-1))(hati+hatj)`. Find the gravitational potential at the origin `(0,0)` in `J kg^(-1)`
A. zero
B. `20sqrt2`
C. `-20sqrt2`
D. can not be defined
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Correct Answer - B
`V=-intE.dr=[intEx.dx+intEx.dy]=20y+20y "at origin" V =0` .
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