Electric Fields with Calculus Video Lessons

Concept

# Problem: Suppose that the electric potential V in a certain region is given by V=Ax2-Bx+C where A = 2.15 V/m2, B = 3.45 V/m, and C = 7.45 V. Find the magnitude of the electric field E at the point x = 1.55 m.

###### FREE Expert Solution

The electric field is expressed as:

$\overline{){{\mathbf{E}}}_{{\mathbf{x}}}{\mathbf{=}}{\mathbf{-}}\frac{\mathbf{d}\mathbf{V}}{\mathbf{d}\mathbf{x}}}$

We've been given V=Ax2-Bx+C.

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###### Problem Details

Suppose that the electric potential V in a certain region is given by V=Ax2-Bx+C where A = 2.15 V/m2, B = 3.45 V/m, and C = 7.45 V. Find the magnitude of the electric field E at the point x = 1.55 m.