2. A thin rod is bent in the form of a half-ring of radius R. The charge + q is evenly distributed over the upper half of the half-ring, the charge -q is evenly distributed over the lower half. Determine the strength of the electric field and its potential in the center of the half-ring.

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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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2. A thin rod is bent in the form of a half-ring of radius R. The charge + q is evenly distributed over the upper half of the half-ring, the charge -q is evenly distributed over the lower half. Determine the strength of the electric field and its potential in the center of the half-ring.

1. From astronomical observations it is known that the rings of Saturn are composed of small particles of cosmic dust. These particles carry an excess charge. Determine the excess number of electrons on such a particle with a radius of r - 1 μm, if the potential of its surface Φ = - 400B

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