Electric Charge...

A charged particle 'q' lies at 'P' and the line PC is perpendicular to the surface of ABC (part of disc). Find the flux passing through the surface ABC.

Given two positively charged particles $$+Q$$ & $$+q$$. The $$+Q$$ charge is fixed in position, and the $$+q$$ charge is brought close to $$+Q$$ and released from rest. Choose the correct graph between acceleration $$\left(a\right)$$ of the $$+q$$ charge as a function of its distance $$\left(r\right)$$ from $$+Q$$ ?

If the charge on two-point charged bodies and the medium surrounding them are kept unchanged and the distance between them is reduced by $$50$$% then the force between them _____.

A charge $$\displaystyle \left ( 5\sqrt{2}+2\sqrt{5} \right )$$ coulomb is placed on the axis of an infinite disc at a distance a from the centre of disc. The flux of this charge on the part of the disc having inner and outer radius of a and 2a will be :

Find the coulombic force between two $$\alpha-particles$$ separated by a distance of $$8.2$$ fermi, in air.

Mathematically, electric flux can $$\phi$$ be represented as:

$$\vec E = $$  electric field
$$\hat n=$$ surface normal vector
$$A=$$ surface area

Calculate the flux through the base of the cone of radius $$r$$.

The electrostatic force of repulsion between two equal positively charged ions is $$51.84\times 10^{-9}N$$, when they are separated by a distance of $$0.4\ nm$$. How many electrons are missing from each ion?

Find the excess (equal in number) of electrons that must be placed on each of two small spheres spaced $$3\ cm$$ apart with a force of repulsion between the spheres to be $$10^{-19}N$$.