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Coulomb's Law - Mathematical Form

Question

The force of interaction between any two point charges is proportional to :
$q_{1} q_{2}$
$r^{2}$
$r^{- 2}$
$q_{1} / q_{2}$

A

q_{1} q_{2}

B

r^{2}

C

r^{- 2}

D

q_{1} / q_{2}

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Solution

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This is the formula of Coulomb's Law which ca be written as $F = \frac{k q_{1} q_{2}}{r^{2}}$

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