![The metal sphere of a small Van de Graaff generator illustrated in the figure below has a radius of 21.7 cm. When the electric field at the surface of the sphere reaches The metal sphere of a small Van de Graaff generator illustrated in the figure below has a radius of 21.7 cm. When the electric field at the surface of the sphere reaches](https://homework.study.com/cimages/multimages/16/es22974289371192533546024.png)
The metal sphere of a small Van de Graaff generator illustrated in the figure below has a radius of 21.7 cm. When the electric field at the surface of the sphere reaches
![Van de Graaff Generator | Function, Static Electricity & Overview - Video & Lesson Transcript | Study.com Van de Graaff Generator | Function, Static Electricity & Overview - Video & Lesson Transcript | Study.com](https://study.com/cimages/multimages/16/van_de_graaff_generator4870717923574924686.png)
Van de Graaff Generator | Function, Static Electricity & Overview - Video & Lesson Transcript | Study.com
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