We're told that the electric potential in a region of space is:
We take the components of the electric field in the x and y directions to be Ex and Ey, respectively.
The negative sign in these equations is for the potential difference coefficient.
The electric potential in a region of space is V = (150x2 – 200y2) V, where x and y are in meters. What are the strength and direction of the electric field at (x, y) = (2.0 m,2.0 m)? Give the direction as an angle cw or ccw (specify which) from the positive x-axis.
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