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Results tagged with electrostatics
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user 144045
Electrostatics is concerned with the electrical fields and scalar potentials of stationary electrical charges and charge distributions. Use this for questions about electromagnetic situations in which currents and magnetic fields are absent, otherwise use the [electromagnetism] and/or [magnetic-fields] tags.
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Surface charge density formula
On page 125 of the 4th edition (I'm reading the international edition) of Griffiths that equation is not attributed to an infinite plane sheet but rather to the surface of a conductor, and has to do w …
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Putting a charged sphere in a uniform electric field - can we superpose the individual field...
Let's say we want to find the potential outside a charged metal sphere with total charge $q$ when it is placed in a uniform magnetic field $\vec{E}_0$. Infinitely far from all other charge, the charge …
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How to verify generally that the formula for electric potential is a solution to Poisson's e...
$$V(\vec{a})=\frac{1}{4 \pi \epsilon_0}\int_\tau \frac{\rho(\vec{r})}{l}d\tau$$
This is the formula for the potential at a general point $\vec{a}$. Note that $l$ in this formula is the magnitude of t …
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Taking into consideration the non-0 value of an equipotential in a method of images problem
If the infinite conducting plane in the diagram above is grounded, then $V=0$ on the plane and the image problem is easy to solve - just put the dotted $-q$ charge there and the $V=0$ equipotential …
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What is the electric field between two coaxial conducting cylinders when a charged sphere is...
A long cylindrical capacitor of length $l$ consists of an outer conductor of radius $a$ and an inner conductor of radius $b$, where $l>>a$. The outer conductor is earthed, and the inner conductor i …
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