Question

defined coulombs law in vacuum and another medium​

Answer 1

Answer:

Coulomb's law states that: The magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.

Explanation:

The value of εo = 8.854 × 10-12 C2/Nm2. Hence, Coulomb's law can be written for medium as , Then, in air or vacuum εr = 1. Hence, Coulomb's law can be written for air medium as , The value of εr would change depends on the medium.

Answer 2

Answer:

Coulomb's law:It states that two point charges attract or repel each other with a force which is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them

Coulomb's law in vacuum:

$f(vac) = 9 \times {10}^{9} \times \frac{q(1)q(2)}{ {r}^{2} }$

Coulomb's law in water:

$f(water) = 1.125 \times {10}^{8} \times \frac{q(1)q(2)}{ {r}^{2} }$