Twelve equal charges, q, are situated at the corners of a regular 12-sided polygon (for instance, one on each numeral of a clock face). What is the net force on a test charge Q at the center?
The net force on the test charge Q at the center of the regular 12-sided polygon can be found by calculating the vector sum of the forces due to each of the 12 charges q. Since the 12 charges are symmetrically arranged around the center of the polygon, the magnitude of the force on the …