Two balls of radius 2.00 mm have a separation between their centers of 5.33 cm. The same electric charge is placed on both balls so that there is a repulsive force between them of 2.75 N. Assume that the charge is uniformly distributed over each ball. What is the magnitude of the charge

Charges,  

Explanation:

Given that,

Radius of the balls is 2 mm

The force of repulsion acting on the balls, F = 2.75 N

The separation between the spheres, d = 5.33 cm = 0.0533 m

The force of repulsion between charges is given by :

So, the charge on the spheres is . Hence, this is the required solution.

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