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State and explain Coulomb’s inverse square law in electricity?

State and explain Coulomb’s inverse square law in electricity?
 

Grade:12

2 Answers

SAIMANIKANTA
263 Points
8 years ago
Statement:
The force of attraction (or) repulsion between two charges at rest is directly proportional to the
product of magnitude of two charges and inversely proportional to the square of the distance
between them and acts along the line joining the charges.
Explanation:
Let two point charges q1 and q2 at rest are separated by a distance r. The force F between them
is given by
F ∝ q1q2∝1d2(Or) F ∝q1q2r2(Or) F =1q1q24π ∈ r 2
Where ∈ is called to absolute permittivity of the medium.
∈=∈0∈r Where ∈0 is called the permittivity of free space and ∈r is the relative permittivity of
the medium
∈r = 1 For air or vacuum
Hence, for air (or) vacuum Fair =
Fair =1 q1q24π ∈0 r 21 q1q24π ∈0 r 2
(Or) ∈o = 8.854 ×10−12 Farad / m.
venky
235 Points
8 years ago
Statement:
The force of attraction (or) repulsion between two charges at rest is directly proportional to the
product of magnitude of two charges and inversely proportional to the square of the distance
between them and acts along the line joining the charges.
Explanation:
Let two point charges q1 and q2 at rest are separated by a distance r. The force F between them
is given by
F ∝ q1q2∝1d2(Or) F ∝q1q2r2(Or) F =1q1q24π ∈ r 2
Where ∈ is called to absolute permittivity of the medium.
∈=∈0∈r Where ∈0 is called the permittivity of free space and ∈r is the relative permittivity of
the medium
∈r = 1 For air or vacuum
Hence, for air (or) vacuum Fair =
Fair =1 q1q24π ∈0 r 21 q1q24π ∈0 r 2 (Or) ∈o = 8.854 ×10−12 Farad / m.

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