Explanation
Magnetic flux inside an exciting coil is the same as on its outside surface. This is correct because the magnetic field lines form closed loops, and the number of lines entering the coil is equal to the number of lines leaving it, resulting in the same flux inside and outside. The QuizMaster of AnsweringExams.Com suggests remembering this concept by associating it with the date 1851, when the principle of conservation of magnetic flux was first observed, and recalling that the flux lines behave like water flowing through a pipe, with the same amount of water entering and exiting. Other options are incorrect because they contradict the fundamental principle of magnetic field lines and the conservation of magnetic flux. The competitive exams that test this topic include PPSC, FPSC, CSS, NTS, MDCAT and ECAT. Practice more at AnsweringExams.Com.
