Recent content by sergioro

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    E-field of a Semi-spherical charge distribution with a hole

    Yes, but the charge source vector is not measure respect the hole. The picture attached "might" help to make clear the narrative of the problem. I found the solution via power expansion. Nevertheless, I am still curios on why direct integration does not seem to work here (there is a divergence...
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    E-field of a Semi-spherical charge distribution with a hole

    It is not a fix lower limit. It is a spherical hole.
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    E-field of a Semi-spherical charge distribution with a hole

    Homework Statement Using direct integration, compute the electric field at the point (0,0,Z) of a semi-espherical (z > 0) charge distribution of radius R < Z and density ##\rho=constant## having a spherical hole of radius ##r_h<R## centered at (0,0,##r_h##). Homework Equations Coulomb's law...
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    Graduate A question about the point of action of the magnetic force

    Thanks, Simon. The first part of your comment triggers the intuition I was missing.
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    Graduate A question about the point of action of the magnetic force

    Hello everyone, Translation of extended objects is described taking the net force acting on the center of mass of the extended object. But to compute rotational motion, one needs to considers each force on their point of action. For example, let's consider a current I flowing in a...
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    How is this array of capacitors connected: Serie or parallel?

    Homework Statement The figure shows three capacitors with capacitances C1, C2, and C3. How are they connected: in parallel or in series? |------| |------| |.....| (middle dots don't mean any thing. they help keep lines in place) |---| |---| |---|Homework Equations Serie...
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    The electric field of a charged semicircle from its electric potential

    All right, haruspex . I see the point now. Some how I was mislead by the textbook. After writing the potential at any point in space (x,y,z) and Leaving it in integral form, I then computed its derivatives with respect to each one of the components of the field point (x,y,z). Then...
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    The electric field of a charged semicircle from its electric potential

    Homework Statement A question involving the relationship between the electric field E(r) and the electric potential V( r) is about computing the electric field on the z-axis due to a uniform line charge distribution λ spread out on a semicircle of radius R, lying on the first half of the XY...