Question

define coulomb law and write the formula

Answer 1

.Coulomb's law states that the forceacting between two charged particles is directly proportional to the product of the amount of charges ( including sign , which tells us aboutthe direction of applicationof force ) and is inversely proportional to the square of the distance between them.

*.F (proportionality sign ) q1 ×q2*.F (proportionality sign ) (1/(r)^2)

*.Where q1 andq2 are amounts of charges (withsigns ).

*.And r is the distance gap between the 2 charges.*.Removing theproportionality sign we get:

*.F=kq1q2/(r^2)

*.Where 'k' is the proportionality constant called as dielectric constant.

*.And the valueofk is 9 × (10^9) N(m^2)/(C^2).

Answer 2

A force acting upon two charged particle at finite distance is directly proportional to the product of the magnitude of charge and inversely proportional to the
square of distance between them
$f = kq q \div {r}^{2}$