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Q&A

Posts tagged electrostatics

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Q&A Direction of vector of electric field

Suppose we have a arc of charges with some charge density $\lambda(\theta) = sin\theta$.I am using polar coordinates for convenience.But how can I find the direction of the unit vector of the net e...

0 answers  ·  posted 9d ago by MissMulan‭  ·  edited 9d ago by samcarter‭

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Q&A How are charges sorted?

Im designing a capacitor and I have decided to make the surface of 1 plate of the capacitor bigger than the other plate. How are the charges sorted through A2?Are they spread out to cover all th...

0 answers  ·  posted 4mo ago by MissMulan‭

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Q&A What's the equation of kinetic energy of charged particle?

I was looking for equation of motion. I came up with a solution but it doesn't satisfy me. Cause I was trying to find motion of that particle using Lagrangian. We know that $$W=\int \vec F\cdot d\...

1 answer  ·  posted 12mo ago by deleted user  ·  edited 9mo ago by deleted user

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Q&A How electric displacement is proportional to surface charge?

$$\begin{alignat}{2} &amp;&amp; \vec \nabla \cdot \vec D &amp; = \rho_f \\ &amp; \implies &amp;\int_V \vec{\nabla} \cdot \vec D \mathrm d\tau &amp; = \int_V \rho_f\ \mathrm d \tau \\ &amp; \impl...

1 answer  ·  posted 11mo ago by deleted user  ·  last activity 11mo ago by deleted user

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Q&A Magnetic charges to solve interaction between 2 magnetic dipoles

Suppose we have an electric dipole of charge Q+ and Q-.The charges of the dipole are fixed (they cant move closer to each other than they already are).If we place a test particle at some distance r...

1 answer  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by Olin Lathrop‭

Question electrostatics
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Q&A Calculating frequency of oscillation

A 4C point charge of mass 2kg is suspended by a string of length 6m. The charge is placed in the Earth's Gravitational field and a uniform horizontal electric field of strength $\sqrt{11}NC^{-2}$...

1 answer  ·  posted 1y ago by deleted user

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