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Electric fields (A-level only)

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Question 38

What are the electric field strength and the electric potential at a distance of 2.5r 2.5r\,2.5r from the centre of the grain?

Electric field strength: 25E\frac{2}{5}E52​E, Electric potential: 425V\frac{4}{25}V254​V

Electric field strength: 425E\frac{4}{25}E254​E, Electric potential: 25V\frac{2}{5}V52​V

Electric field strength: 425E\frac{4}{25}E254​E, Electric potential: 425V\frac{4}{25}V254​V

Electric field strength: 25E\frac{2}{5}E52​E, Electric potential: 25V\frac{2}{5}V52​V

Electric fields (A-level only) Questions

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