Lethole, N.L.Kwinana, P.2025-06-112025-06-112024-11http://hdl.handle.net/20.500.11837/2886Electricity and Magnetism: PHY 121, Supplementary Examinations November 2024This supplementary examination paper for PHY 121: Electricity and Magnetism, administered by the University of Fort Hare in November 2024, assesses students' comprehensive understanding of fundamental principles in electromagnetism. The 100-mark paper, spanning four main questions, covers core concepts including Coulomb's law, conservation of charge, electric fields and potential energy of dipoles, properties of conductors, semiconductors, and insulators, and the relationship between electric forces and mechanical weight. Furthermore, it delves into electromotive force, power, resistivity, electron drift velocity in current-carrying wires, electrical measuring instruments, Kirchhoff's rules, and the motion of charged particles in magnetic fields. The paper also requires derivations and applications of the Biot-Savart law for magnetic fields due to current elements and circular coils. A formulae sheet and fundamental physical constants are provided to support problem-solving.en-USLearning Object