Ziya: Coulomb established what we now call Coulomb’s law: The magnitude of the electric force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. In mathematical terms, the magnitude F of the force that each of two point charges q1 and q2 a distance r apart exerts on the other can be expressed as F = k. |q1 q2|/r^2 (21.1) where k is a proportionality constant whose numerical value depends on the system of units used. The absolute value bars are used in Eq. (21.1) because the charges q1 and q2 can be either positive or negative, while the force magnitude F is always positive.

Coulomb established what we now call Coulomb’s law: The magnitude of the electric force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. In mathematical terms, the magnitude F of the force that each of two point charges q1 and q2 a distance r apart exerts on the other can be expressed as F = k. |q1 q2|/r^2 (21.1) where k is a proportionality constant whose numerical value depends on the system of units used. The absolute value bars are used in Eq. (21.1) because the charges q1 and q2 can be either positive or negative, while the force magnitude F is always positive.

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Sears ve Zemansky’nin Üniversite Fiziği 2 Hugh D. Young

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