A square plate of side $'a'$ is placed in $xy$ plane having centre at origin if charge density of square plate is $\sigma = xy$ then. Total charge on the plate will be
$\frac{1}{2}\,{a^2}$
${a^2}$
$3a^2$
Zero
Two isolated metallic spheres of radii $2 \,cm$ and $4 \,cm$ are given equal charge, then the ratio of charge density on the surfaces of the spheres will be
What are linear, surface and volume distribution of charge ?
Explain linear charge density, surface charge density and volume charge density for uniform charge distribution.
Give definitions of linear surface and volume charge densities and write their $SI$ units.
If volume charge density is $\rho $, then what will be the charge on $\Delta V$ volume ?