gauss law

In an electrostatic field, the electric displacement density vector, $$\overrightarrow D $$, is given by $$\overrightarrow D (x,y,z) = ({x^3}\overrightarrow i + {y^3}\overrightarro...

Concentric spherical shells of radii 2 m, 4 m, and 8 m carry uniform surface charge densities of 20 nC/m 2 , −4 nC/m 2 and ρ s ,respectively. The value of ρ s (nC/m 2 ) required to...

An ideal MOS capacitor has boron doping concentration of 10 15 cm -3 in the substrate. When a gate voltage is applied, a depletion region of width 0.5 $$\mu m$$ is formed with a su...

A metal sphere with 1 m radius and a surface charge density of 10 Coulombs/m 2 is enclosed in a cube of 10 m side. The total outward electric displacement normal to the surface of...

The electric field strength at a distance point, P, due to a point charge, +q, located at the origin, is 100 $$\mu $$V/m. If the point charge is now enclosed by a perfectly conduct...

The electric field strength at a far-off point P due to a point charge + q, located at the origin O is 100 millivolts/metre. The point charge is now enclosed by a perfectly conduct...