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# Posts tagged electromagnetism

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7 posts
66%
+2 −0

Suppose a ferromagnetic material with initial magnetization $M_o$.Is there some specific formula which calculates the total magnetization $M$ as a function of $M_{o}$ and the Curie temperature $T_{... 1 answer · posted 10mo ago by MissMulan‭ · last activity 4mo ago by Anyon‭ Question electromagnetism 60% +1 −0 The general formula for a EM wave (solving for the E field) is: where$\varepsilon = \varepsilon _{r}+j\frac{\sigma }{\omega }$My professor told me that the conductivity of vacuum is 0 so we... 0 answers · posted 12mo ago by MissMulan‭ Question electromagnetism 50% +0 −0 Maxwell's first law in differential form states that $$\triangledown \cdot E = \frac{\rho}{\epsilon_{o}}$$ . In case of 1d can we say that $$\rho = \lambda$$ where $$\lambda$$ is the linear char... 1 answer · posted 1y ago by MissMulan‭ · last activity 12mo ago by celtschk‭ Question electromagnetism 71% +3 −0 When a pendulum made of a conducting material moves through a magnetic field, it's a well-established fact that it experiences a retarding force, thus slowing it down, however, I'm unable to unders... 1 answer · posted 1y ago by esrdtfghjk‭ · last activity 1y ago by Olin Lathrop‭ Question electromagnetism 50% +0 −0 Get 2 conductors and seperate them we can use Gauss's law to calculate the capacitance created by the seperation of the 2 conductors.Can we use other laws of electromagnetism to calculate the induc... 2 answers · posted 1y ago by MissMulan‭ · last activity 1y ago by TonyStewart‭ Question electromagnetism 50% +0 −0 I saw following equation in Griffiths EM $$V(r)=-\int_\mathcal{O}^r \vec E \cdot d\vec l$$ While the surface was closed but not symmetrical circular. At first I was thinking$\mathcal O\$ was repr...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by deleted user

Question electromagnetism
66%
+2 −0

We have place a charged particle of 2C with mass 2kg, 1mm above a current-carrying wire of 1A.The charged particle has an initial velocity of 100m/s The magnetic field of the wire for simplicity w...

0 answers  ·  posted 2y ago by MissMulan‭  ·  edited 2y ago by MissMulan‭

Question electromagnetism