AP EAMCET · PHYSICS · Electromagnetic Induction
A Van de Graff generator has a spherical metal shell as an electrode which is at a potential . If the dielectric strength of the surrounding medium is then the diameter of the shell is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given, Potential, V=15×106 Vand dielectric strength, E=5×107 V m-1 so the radius of the cell is, r=VE=15×1065×107 =30 cm, hence the diameter will be, d=2r=2×30=60 cm
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