# Given an electric field, how to find its field lines?

by AlonsoMcLaren
Tags: electric, field, lines
 P: 75 Given the mathematical expression of an electric field, how to find its field lines?
 Sci Advisor P: 1,233 As a simple case, take $$E_x=f(x,y),\quad E_y=g(x,y)$$. Then solve the differential equation $$dy/dx=g/f$$ for y(x).

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