- #1

Sigmeth

- 2

- 0

Sorry for any errors in posting, this is my first thread. Any help would be greatly appreciated!

## Homework Statement

a.)On the contour map that is attached, find the magnitude of the electric field at each point A, B, and C.

b.)Calculate the work done in moving a 1C positive charge from point A to point B.

## Homework Equations

For a.) E=dV/dx Change in potential between bounding equipotential lines/length of the line between bounding equipotentials.

For b.) W=qΔV

## The Attempt at a Solution

For a.) I can find the electric fields at points A and B, but I am not sure how to find point C. Since it is surrounded by the 180, does this mean the magnitude of the electric field at point C is zero? Also, I am not sure the direction of the electric field at point C. I know it is from high potential to low potential.

For b.) Using W=qΔV, I have W=(1C)(180-170). I feel as though I am way off. Does it matter that the lines are not uniform?