Derivation of electric field intensity & flux density

Thread Starter


Joined Aug 22, 2008
Starting from Coulomb's Law, relating the force between two point charges to the magnitude of the charges and the distance between them, develop expression for the electric field density, D and electric field intensity, E, at a distance of r meter from a charge of magnitude +q1 coulomb. [20%]

then show that the absolute potential at a distance of r meter from a point charge of +q1 coulomb, in air is given by V = q1 / (4pi x epsilon x r) . [30%]


Joined Apr 20, 2004
I moved this to the Homework section, as the percentages make the questions appear to be from a test.

We do not supply answers, but are willing to give guidance in instances where you are stuck. What work have you done so far on these questions?