FYKOS Year 32 Series 1 Problem 3 — unstable · FYKOS 32 #32.1.3

Physics · electromagnetism

Problem

We have 8 point charges (each of magnitude

q

) located on the vertices of a cube. Find out the value of a point charge

q_0

that needs to be placed in the middle of the cube, so that all charges remain in balance. Is this equilibrium stable?