The sketch below shows cross sections of equipotential surfaces between two charged conductors that are shown in solid grey. Various points on the equipotential surfaces near the conductors are labeled A, B, C, ..., I.
-At which of the labeled points will the electric field have the greatest magnitude?

Question

The sketch below shows cross sections of equipotential surfaces between two charged conductors that are shown in solid grey. Various points on the equipotential surfaces near the conductors are labeled A, B, C, ..., I. 
-At which of the labeled points will the electric field have the greatest magnitude?

Quizplus · Accepted Answer

The electric field is proportional to the density of the equipotential lines, which are closest near point I. Therefore, the electric field has the greatest magnitude at point I.

The Sketch Below Shows Cross Sections of Equipotential Surfaces Between