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Coulomb's Law

$$F = k_e \frac{q_1 q_2}{r^2}$$

Calculates the electrostatic force between two point charges.

📖 Physics 📚 Electrostatics

Coulomb's Law in Dielectrics

$$F = \frac{1}{4\pi\epsilon_0\epsilon_r} \frac{q_1q_2}{r^2}$$

Calculates the electrostatic force between two charges when placed in a dielectric medium.

📖 Physics 📚 Electrostatics

Coulomb's Constant Formula

$$k_e = \frac{1}{4\pi\epsilon_0}$$

Relates the SI units of charge to the electrostatic force.

📖 Physics 📚 Electrostatics

Electric Field (Point Charge)

$$E = k\frac{q}{r^2}$$

Electric field magnitude due to a point charge.

📖 Physics 📚 Electrostatics

Electric Potential of Point Charge

$$V = \frac{1}{4\pi\epsilon_0} \frac{q}{r}$$

The work done per unit charge in bringing a positive test charge from infinity to a point.

📖 Physics 📚 Electrostatics

Coulomb's Law in Media

$$F = \frac{1}{4\pi\epsilon_0 K} \frac{q_1 q_2}{r^2}$$

The force between two point charges placed in a dielectric medium.

📖 Physics 📚 Electrostatics

Electric Flux (Gauss's Law)

$$\Phi_E = \oint \vec{E} \cdot d\vec{A} = \frac{q_{enc}}{\epsilon_0}$$

The net electric flux through any closed surface is equal to the net charge enclosed by the surface divided by $\epsilon_0$.

📖 Physics 📚 Electrostatics

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