Question: The results of Problem 61 apply also to an electrostatic precipitator (Figures 25.30 and P25.61). An applied voltage V = Va - Vb = 50.0

The results of Problem 61 apply also to an electrostatic precipitator (Figures 25.30 and P25.61). An applied voltage ∆V = Va - Vb = 50.0 kV is to produce an electric field of magnitude 5.50 MV/m at the surface of the central wire. Assume the outer cylindrical wall has uniform radius ra = 0.850 m.
(a) What should be the radius rb of the central wire? You will need to solve a transcendental equation.
(b) What is the magnitude of the electric field at the outer wall?

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