1. Section 2 Electric Force
Chapter 16
Coulomb’s Law
Two charges near one another exert a force on one another called the electric force.
Coulomb’s law states that the electric force is propor-tional to the magnitude of each charge and inversely proportional to the square of the distance between them.

2. kc = 8.99 x 109 Nm2/C2

3. Coulomb’s Law, continued
Section 2 Electric Force
Chapter 16
Coulomb’s Law, continued
The resultant force on a charge is the vector sum of the individual forces on that charge.
When you perform calculations using Coulomb’s Law, make sure you use the proper signs for the vectors
If your answer is positive, the force is repulsive
If your answer is negative, the force is attractive

4. Coulomb’s Law, continued
Section 2 Electric Force
Chapter 16
Coulomb’s Law, continued
The Coulomb force is a field force.

5. Coulomb’s Law, continued
Section 2 Electric Force
Chapter 16
Coulomb’s Law, continued
Suppose that two point charges, one with a charge of Coulomb and one with Coulomb are separated by a distance of 3.00 meters. Determine the magnitude of the electrical force between them.
Felect = 5.99 x 109 N
Felect = (8.99 x 109 N•m2/C2) • (2.00 C) • (3.00 C) / (3.00 m)2