Question

Two spheres, each with a charge of +3x10-6C, are separated by 100 mm. Are they attracting each other or rejecting? Determine the force between them.

Answer 1

The force between the equal charged spheres, is:    F = 8.1 N

To determine the force between the spheres, Coulomb's law is applied, load and distance values ​​are substituted as shown below:

q1 =+3x10-6C

q2= +3x10-6C

d= 100 mm * 1m/ 1000 mm= 0.1 m

F=?

Coulomb's law :

   F = K*q1*q2/d

   F  =9*10^9N*mC* 3x10-6C*3x10-6C/(0.1 m)²

  F =8.1 N