Questions tagged [charge]

A fundamental property of matter which causes it to experience electromagnetic forces.

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How to find the electrostatic potential of a hydrogen-like charge density?

I've been trying to find the scalar potential that would correspond to the charge density of a ground state hydrogen atom. The result is known, and the inverse of my problem can be found e.g. in ...
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How can we find the charge distribution of $n$ external electrons on the surface of a conducting cube? [closed]

Suppose we take 'n' electrons and put them on the surface of a conducting cube. How can we calculate the charge distrubution and position of these electrons once the static situation has been arrived ...
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Inconsistency regarding two charge elements on a uniformly charged disk

Let us say we have the following uniformly and positively charged thin disk: Suppose also that the total charge on the disk equas $Q$, with which we could define a constant charge density $\sigma$ ...
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Coulomb's law and the continuous charge model in an infinite charged plane [duplicate]

The $E$-field of an infinite plane with a uniform charge density $\sigma$ has a constant magnitude equaling $2\pi\sigma$. Now, this magnitude assumes a continuous charge model throughout the plane. ...
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Work done by charged particles [closed]

A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments; one in which the charged particle is also a proton and in another, ...
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Is there an easy way to tell whether this “Curlmeter” would rotate or not?

Let us say we have the following symmetrical apparatus: Four equal positive charges, all connected to a shaft that can rotate, the connecting rods are insulated, and so does the shaft. Now ...
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Path independence of the line integral of the electrostatic field created by an arbitrary charge distribution

Suppose we have the following situation: A positive arbitrarily shaped charge distribution. The line integral of the total electric field, generated by the whole distribution, from $A$ to $B$ is ...
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What is actually being removed when a metal conductor is grounded?

I found this image earlier this morning, and yes, there are a lot of diagrams/illustrations about this, transferring charges by induction has been introduced since the very beginning of high school ...
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Why did the experimenter touch the circular plate in this demonstration?

In this introductory physics experiment demonstration, the experimenter went through the following procedure: First, he charged the rectangular plate by rubbing it with fur. Next, he laid a ...
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Condemnable limit for the electrostatic field? [closed]

When we define the electrostatic field (law's Coulomb), generated by a $Q$ charge calculated in a point $P$ of the space, we place a particle with a small positive charge $q_0$, called a test charge ...
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Electric field of point charge

in above picture, we have two point charge ( same size ). Does electric field of q2 at location of q1 depend on size of q1? because we know when we want to measure electric field of a charge, use ...