Each of Two Small Non-Conducting Spheres Is Charged Positively, the Combined

Multiple Choice

Each of two small non-conducting spheres is charged positively, the combined charge being 40 μC. When the two spheres are 50 cm apart, each sphere is repelled from the other by a force of magnitude 2.0 N. Determine the magnitude of the smaller of the two charges.

A) 1.4 μC
B) 1.1 μC
C) 2.0 μC
D) 3.3 μC
E) 17 μC