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Homework Statement
In the diagram below, each division on the horizontal axis (the displacement s) is 0.10 m while each division on the vertical axis (the electric potential V) is 1.0 V. What is the electric field component along the displacement axis s in each of the regions specified below? Include the sign of the value in your answer.
(a) from 0.0 m to 0.10m
(b) from 0.10m to 0.90m
(c) from 0.90m to 1.00m
Homework Equations
ΔV=Vf-Vi = -∫E⋅ds
The Attempt at a Solution
I understand that the e-field for a and c is zero. A constant potential means that the e-field isn't changing.
My question is about b. The answer is -6.25 V, but I can't wrap my head around what this means. What's the difference between an e-field of +6.25 V and -6.25 V? Is it just the direction the e-field points compared to the direction you're moving?