L 0(N2/)A is called the self inductance of the coil. The change in flux per unit time is 0(N2/)A I/t LI/t, since I is the only quantity changing with time. The plane of the coil is perpendicular to the magnetic field: the field points out of the page. The flux through the coil is NBA 0(N2/)IA. MCQ in Magnetic/Electromagnet PrinciplesĬontinue Practice Exam Test Questions Part 12 of the SeriesĬhoose the letter of the best answer in each questions.ĥ51. The coil is 20 cm on each side, and has a magnetic field of 0.3 T passing through it.MCQ in Magnetic and Electric Quantities / Units.MCQ in Magnetic Field and Magnetic Flux.MCQ in Ohm’s Law, Kirchhoff Law, Coulomb’s Law, etc.MCQ Topic Outline included in ECE Board Exam Syllabi Make reasonable assumptions and specify the size of the coil and the number of turns necessary to light a standard 1-watt, 3-V flashlight bulb. Assume the magnet has a maximum field strength of 0.05 T. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electronics Engineering field, Electronics Books, Journals and other Electronics References. The coil and magnet are inside a plastic tube that can be shaken causing the magnet to move back and forth through the coil. This is the Multiple Choice Questions Part 12 of the Series in Electricity and Magnetism Fundamentals as one of the Electronics Engineering topic. quadratic equation binomial theorem logarithms. Pre-board in Communications Engineering Flux Linkage The flux linkage is defined as: It is calculated using the equation: Where: magnetic flux (Wb) N number of turns of the coil B.
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