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Grade 12Electrostatics

Calculate the ratio of the electrostatic force to gravitational force between two electrons , two protons. At what value of the specific charge of a particle would these forces becomes equal in the case of interaction of identical particles?

Profile image of Abhay mishra
8 Years agoGrade 12
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1 Answer

Profile image of Arun
8 Years ago
Gravitational attraction between two electrons is: 
Fgrav = G m^2 / r^2 

Electrostatic repulsion between two electrons is: 
Felec = k q^2 / r^2 

The ratio, therefore, is kq^2 / Gm^2. 
 
Now put the values and find the answer.
Similarly you can do for protons

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