List of top Physics Questions on coulombs law asked in KEAM

Force between two charges \( +8\,\mu C \) and \( +2\,\mu C \) is \( 16\,N \). If the charges are brought into contact and then separated by the same distance, the force between them is

Which one of the following pairs of charges separated by the same distance r will experience a maximum force?

A given charge \( Q \) is divided into two parts which are then kept at a distance \( d \) apart. The electrostatic force between them will be maximum if the two parts are

The electrostatic force between two point charges at a distance of separation \(d\) is \(F\). If one of the charge is moved away by a distance \(d/2\) then the force between them is

Around a stationary charge of +5µC, another charge -5µC is taken once round a circle of radius 4 cm. The amount of work done in Joule is

Three point charges $4q$, $Q$ and $q$ are placed in a straight line of length $L$ at points 0, $L/2$ and $L$ respectively. The net force on charge $q$ is zero. The value of $Q$ is

The force between two point charges placed in a material medium of dielectric constant $\varepsilon_r$ is $F$. If the material is removed, then the force between them becomes

The electrostatic force between two point charges is directly proportional to the

The electrostatic force between two point charges is directly proportional to the

The electrostatic force between two point charges is directly proportional to the

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