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I was doing an experiment in which i have a needle perpendicular to a metal plate. I run 210kV between them. I want to find out the electric field between the two, and I also want to know the electric al field density throught the metal plate? Pls help. I found a formula for the electrical field. it was $$E(r) = \frac{V*a}{r}*\frac{1}{1-a/b}$$
where V is the applied voltage, a is the radius of the pin point, b is the distance from the pin point to the grounded plate, and r is the radial distance from the pin point to the grounded plate?
The plate is a circular piece of metal, I want to find the density of the electrical field going through a smaller circular region right below the metal. will I need to put r as the radius of the area?
I was doing an experiment in which i have a needle perpendicular to a metal plate. I run 210kV between them. I want to find out the electric field between the two, and I also want to know the electric al field density throught the metal plate? Pls help. I found a formula for the electrical field. it was $$E(r) = \frac{V*a}{r}*\frac{1}{1-a/b}$$
where V is the applied voltage, a is the radius of the pin point, b is the distance from the pin point to the grounded plate, and r is the radial distance from the pin point to the grounded plate?
The plate is a circular piece of metal, I want to find the density of the electrical field going through a smaller circular region right below the metal. will I need to put r as the radius of the area?