Columbs law in magnetism
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Yogita Ingle 6 years, 3 months ago
Coulomb’s Law is formula or quantitative aspect of electricity which gives an idea about force between two point charges. By the word point charge, we mean that in physics, the size of linear charged bodies is very small compared to the distance between them, so we consider them as point charges as it becomes easy for us to calculate the force of attraction/ repulsion between them.
Generally, the statement, let’s say there are two charges q1 and q2. The distance between the charges is ‘r’, and the force of attraction/repulsion between them is ‘F’. Then
F ∝ q1q2
F ∝ 1/r2
F = k q1q2/ r2
where k is proportionality constant and equals to 1/4 π ε0, the symbol ε0 is called epsilon naught and it signifies permittivity of a vacuum.
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