Asolid conducting sphere of radius 2.00 cm has a charge of 6.77 μc. a conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a charge of −2.13 μc. find the electric field at the following radii from the center of this charge configuration. (a) r = 1.00 cm (b) r = 3.00 cm (c) r = 4.50 cm (d) r = 7.00 cm

Part a)

E = 0

Part b)

Part c)

Electric field inside the conductor is again zero

Part d)

Explanation:

Part a)

conducting sphere is of radius

R = 2 cm

so electric field inside any conductor is always zero

So electric field at r = 1 cm

E = 0

Part b)

Now at r = 3 cm

By Gauss law

Part c)

Again when we use r = 4.50 cm

then we will have

Electric field inside the conductor is again zero

Part d)

Now at r = 7 cm

again by Gauss law

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