Electric Field Strength charges

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Homework Statement

Charge A has 10 electric field lines coming out, Charge B has 20 lines coming out, and Charge C has 30 lines coming in. Which pair of these charges will have the largest force between them if placed one cm apart?

Homework Equations

The Attempt at a Solution

Is it B and C just because they have the most amount of lines??

 

[Chi Meson]

Yes. WHen drawing electric field lines, the number of lines are only a relative quantification of the field strength. If field lines are properly drawn, then 3 x the number of lines emanating from a charge indicates a charge 3 x as great.