Two small, identical spherical conductors carry charges of 8.1 C and -2.5 C. The

Question

Two small, identical spherical conductors carry charges of 8.1 C and -2.5 C. They are separated by a distance of 48.0 cm. Calculate the magnitude of the electrostatic force between these two spheres.

Is the force between the spheres in the above problem attractive or repulsive?

The spheres described in the previous problem are brought into contact and then returned to their original separation. Calculate the magnitude of the electrostatic force between these two spheres

Is the force between the spheres in the above problem attractive or repulsive?

Explanation / Answer

The magnitude of the electrostatic force = F = kq1q2/r^2 = (9*10^9*8.1*10^-6*2.5*10^-6)/0.48^2 = 0.791 N

The force will be attractive as the charges are of opposite nature.

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