Question

(c) 5 N
(J&K C.E.T. 2002)
3. The ratio of electrostatic and gravitational forces
acting between electron and proton separated by a
distance 5 x 10-11 m, will be
(Charge on electron = 1.6 x 10-19 C, mass of electron
= 9.1 x 10-31 kg, mass of proton = 1.6 x 10-27 kg, G =
6.7 x 10-11 N m®/kg)
​

Answer 1

Answer:

For Electrostatic force Fe=(q_1q_2)/r^2

and For Gravitational force Fg=(-GMm)/r^2

use this formula and then do Fe/Fg

Explanation:

q_1=charge of electron

q_2=charge of proton

r=5×10^-11m

M=1.6×10^-27 kg

m=9.1×10^-31 kg

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