Two solid spheres, both of radius 5 cm, carry identical total charges of 2 µC. Sphere A is a good conductor. Sphere B is an insulator, and its charge is distributed uniformly throughout its volume. How do the magnitudes of the electric fields they separately create at radius 4 cm compare?
1. EA > EB = 0
2. EA > EB > 0
3. EA = EB > 0
4. 0 < EA < EB
5. 0 = EA < EB
5
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