Question

How much repulsion is there between two electrons placed at a distance of 1cm away from each other . Given mass of an electron is 9.1 kg

Answer 1

The force of repulsion between electron is F = 23.04 x 10^-25 N

Explanation:

We are given that:

• Distance between electron = 1 cm = 1 x 10^-2 m
• Mass of electron = 9.1 Kg
• Charge on electron = 1.6 x 10^-19 C

Solution:

The formula to calculate

the repulsion between electron is given by;

F = K q1 q2 / r^2

Now put teh values in the formula:

F = 9 x 10^9 x (1.6 x 10^-19)^2 / (1 x 10^-2)^2

F =  9 x 10^9 x 2.56 x 10^-38 / 1 x 10^-4

F = 23.04 x 10^-25 N

Thus the force of repulsion between electron is F = 23.04 x 10^-25 N