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Is this formula I derived for Potential Difference between two points in an electric field correct?
Let's assume that we have a positive charge $Q$ and a positive test charge $q$ is moved by an external agent from a point $A$ to $B$. The distance of $Q$ from $A$ is $r_1$ and from $Q$ to $B$ is $r_2$....
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0
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1
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Why isn't electric potential infinite?
In my textbook, I've read that electric potential is the work performed to carry one unit of positive charge to electric field from infinite distance.
We know that, W = Fs
So here the distance is ...
-2
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3
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What is the formula of Coulomb potential?
According to "Lectures on Quantum Mechanics" by Steven Weinberg, the formula of Coulomb potential is
$$V(r) = - \frac{Z e^2}{r}.$$
But it this true? I calculated the integral
$$V = - \int _\infty ^...
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