Question

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A solid insulating sphere of radius a = 5.00 cm carries a net positive charge of Q = 3.00 μC uniformly distributed throughout its volume. Concentric with this sphere is a conducting spherical shell with inner radius b = 10.0 cm and outer radius c = 15.0 cm as shown in Figure P24.54, having net charge q = −1.00 μC. Prepare a graph of the magnitude of the electric field due to this configuration versus r for 0 < r < 25.0 cm.