Coulomb’s law (16-1)

Question 1 of 4

Question

Absolute values of the point charges

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Question

Any two point charges $q_1$ and $q_2$ exert equally strong electric forces on each other.

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Review

A point charge is an idealization, just like a massless rope or a frictionless incline, but it’s a good description in many situations where charged objects interact with each other. Coulomb’s law tells us the magnitude of the electric force that two point charges $q_1$ and $q_2$ separated by a distance $r$ exert on each other: