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Determine the electric field strength ve...

Determine the electric field strength vector if the potential of this field depends on (x, y, z) co-ordinates as `V=A(x^(2)-y^(2))`.

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`E_(x) =(delV)/(delx) = -2Ax and E_(y) = -(delV)/(dely)=2Ay`
`barE=E_(x) hati +E_(y) hatj = 2A (-x hati +yhatj)`
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