Question

Find the least coulomb force between the charges placed 1m apart.

Answer 1

A light of wavelength 5000 A from a narrow slit falls on

a double slit. If the separation for 16 fringes on a screen

Im away is 2 cm, calculate the separation of doubl

i

Answer 2

The Coulomb force is $2.3\imes 10^{28}N$

Given-The distance between the charge is $1m$ apart

The least Coulomb force between the charge

Coulomb force, also called electrostatic force or Coulomb interaction, attraction or repulsion of particles or objects because of their electric charge.

The charge on an electron is the finest quantity charge known to exist in nature. As a result the least coulomb's force will only appear between two electrons.

Charge on electron $9=1.6\times 10^{-19}C$

Distance between two electron is $r=1m$

Now, least coulombs force $F=\frac{kq^2}{r^2}$

$=\frac{9\times 10^9\times 6\times 10^{19}\times 1.6\times 10^{-19}}{1}$

$=9\times 2.56\times 10^{-29}N$

$=23.044\times 10^{-29}N$

$=2.3\times 10^{-28}N$

Hence, the force is $2.3\time 10^{2.8}N$

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