Questions in Electrostatics

SelectQuestion
Charge on \[\alpha \]-particle is
Two small conducting spheres of equal radius have charges \[ + 10\mu C\] and \[ - 20\mu C\] respectively and placed at a distance \[R\] from each other experience force \[{F_1}\]. If they are brought in contact and separated to the same distance, they experience force \[{F_2}\]. The ratio of \[{F_1}\] to \[{F_2}\] is
Two charges each equal to \[2\mu C\] are 0.5m apart. If both of them exist inside vacuum, then the force between them is
Two charges are at a distance ‘d’ apart. If a copper plate (conducting medium) of thickness \[\frac{d}{2}\] is placed between them, the effective force will be
Two electrons are separated by a distance of $1\AA$. What is the coulomb force between them
Two copper balls, each weighing 10g are kept in air 10 cm apart. If one electron from every \[{10^6}\] atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is 63.5)
A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius \[b\] and outer radius c is concentric with the solid sphere and has a net charge – Q. The surface charge density on the inner and outer surfaces of the spherical shell will be
Three charges each of magnitude q are placed at the corners of an equilateral triangle, the electrostatic force on the charge placed at the center is (each side of triangle is L)
Two charges placed in air repel each other by a force of \[{10^{ - 4}}N\]. When oil is introduced between the charges, the force becomes \[2.5 \times {10^{ - 5}}N\]. The dielectric constant of oil is
Three charges are placed at the vertices of an equilateral triangle of side ‘a’ as shown in the following figure. The force experienced by the charge placed at the vertex A in a direction normal to BC is

View Selected Questions (0)

Back to Categories

Back to Home