Fg and Fe represent gravitational and electrostatic forces respectively between two electrons situated at a distance of 10 cm.the ratio Fg/Fe is of the order of
A) 10⁴³B)10^-43C)10^-35 D)10³⁵

Question

Fg and Fe represent gravitational and electrostatic forces
respectively between two electrons situated at a distance of 10 cm
the ratio Fg/Fe is of the order of
A) 1043 B)10-43 C)10-35
D)1035

Vara · Accepted Answer

Gravitational force:Fg=Gm1m2r2Electrostatic force:Fe=14πε0q1q2r2Ratio of Fg and Fe:FgFe=Gm1m2r2÷14πε0q1q2r2       =Gm1m214πε0q1q2       =6
67×10-119 1×10-319 1×10-319×1091
6×10-191
6×10-19       =2
4×10-43Ans: Option - (B)

Fg and Fe represent gravitational and electrostatic forces respectively between two electrons situated at a distance of 10 cm.the ratio Fg/Fe is of the order of A) 1043 B)10-43 C)10-35 D)1035

Fg and Fe represent gravitational and electrostatic forces respectively between two electrons situated at a distance of 10 cm.the ratio Fg/Fe is of the order of
A) 10⁴³B)10^-43C)10^-35 D)10³⁵