Home › JEE Advanced › Electromagnetism › Which formula matches the form of Coulomb's law …
Which formula matches the form of Coulomb's law given in the notes for two charges $q_1$ and $q_2$ separated by distance $r$?
A$F = k\dfrac{q_1 q_2}{r^2}$
B$F = k\dfrac{q_1 + q_2}{r}$
C$F = k q_1 q_2 r^2$
D$F = k\dfrac{r^2}{q_1 q_2}$
Answer & Solution
Correct answer: A. $F = k\dfrac{q_1 q_2}{r^2}$
The law is written as $F = k\dfrac{q_1 q_2}{r^2}$. This includes direct proportionality to the product of charges and inverse-square dependence on distance.
Related questions
Certain galvanometers use eddy currents to provide electromagnetic:The SI unit of inductance is the:Eddy current flow patterns are said to resemble swirling eddies in:Foucault lived from 1819 until:Who discovered eddy currents?Swirling induced currents in a metal plate are called:What in Faraday's equation represents Lenz's law?Lenz's law says the induced current opposes the change in: