Write the limitations of Coulomb's law.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) The limitations of Coulomb's law are as follows:
$1$. It is applicable only for point charges. $A$ point charge is defined as a charge whose size is negligible compared to the distance between them.
$2$. It is valid only when the charges are at rest. If the charges are in motion,additional magnetic forces come into play.
$3$. It is applicable only for distances greater than the nuclear range (i.e.,$r > 10^{-15} \ m$). At distances smaller than this,strong nuclear forces dominate over electrostatic forces.
$4$. It is a fundamental law that holds true for distances ranging from the size of an atom to macroscopic distances.

Explore More

Similar Questions

Two identical conducting spheres carrying different charges attract each other with a force $F$ when placed in air at a distance $d$ apart. The spheres are brought into contact and then returned to their original positions. Now,the two spheres repel each other with a force whose magnitude is equal to the initial attractive force. The ratio between the initial charges on the spheres is:

Write some important points for the vector form of Coulomb's law.

Difficult
View Solution

Four charges are placed at the circumference of a dial clock as shown in the figure. If the clock has only an hour hand,then the resultant force on a charge $q_0$ placed at the center points in the direction which shows the time as (in $:30$)

Difficult
View Solution

An oil drop of $12$ excess electrons is held stationary under a constant electric field of $2.55 \times 10^{4} \; N \, C^{-1}$ (Millikan's oil drop experiment). The density of the oil is $1.26 \; g \, cm^{-3}$. Estimate the radius of the drop. $(g = 9.81 \; m \, s^{-2}; e = 1.60 \times 10^{-19} \; C)$

The ratio of the forces between two small spheres with constant charge $(a)$ in air and $(b)$ in a medium of dielectric constant $K$ is:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo