EEC 227 POWER SYSTEMS II Exam 2026

About this paper

EEC 227: First Semester Examination 2025/2026 for EEC227, Physics for Engineers, Departments of Electrical/Renewable Engineering, University of Buea, instructor Pr. TAKEMBO Clovis (AP), February 2026, 2 hours. Duplicate paper of ID 2953 (byte-identical source content). Section A (35 marks) is a 5-item electrostatics MCQ covering: the net Coulomb force between charges q and 2q on the x-axis, its direction, the radial nature of the field around a negative charge, the electric flux of a point charge through an infinite plane it does not lie on, and the potential in the two regions around a pair of concentric charged spherical shells (+Q inner, -Q outer). Section B (35 marks) has two show-your-work problems: computing the total electric potential at a point P due to two point charges and the change in potential energy as a third charge is brought from infinity to P; and, for three charges 2q, -4q, 2q at the corners of a triangle on the axes, finding the potential at a point M on the y-axis, the individual and net electric fields there via Coulomb's law, and verifying the field result is consistent with taking the negative gradient of the potential.