(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A) Calculate the work performed by an external agent to move a charge of -0.59x10-12 C from `i' to `b'.

B) Calculate the magnitude of the electric field at `k'

2. Relevant equations

W = q∆V

Where ∆V is the potential diﬀerence between the two potential lines each point

lies on

E = -∆V/∆L

3. The attempt at a solution

A) I know the work equation is charge x the change in V but I am not sure how to interpret the Equipotential lines in order to get change in V.

B) I know the equation is E = -∆V/∆L but I am not sure how to calculate both those variables from the graph.

The real question I have is how to interpret this graph to get ∆V and ∆L? I know that an Equipotential contour graph shows the plain perpendicular to the e-filed thus making Volts zero at any place there isn't a point charge.

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# Homework Help: Calculating Work and E-field from and equipotential contour graph

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