Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 187 At 300 At 30 At 18.75 At 187 At 300 At 30 At 18.75 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The initial permeability of an iron rod is The permeability almost in non-magnetised state The lowest permeability of the iron rod The highest permeability of the iron rod The permeability at the end of the iron rod The permeability almost in non-magnetised state The lowest permeability of the iron rod The highest permeability of the iron rod The permeability at the end of the iron rod ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Paramagnetic materials have relative permeability slightly less than unity slightly more than unity equal to that ferromagnetic mate rials equal to unity slightly less than unity slightly more than unity equal to that ferromagnetic mate rials equal to unity ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m? 1111 At/Wb 111 At/Wb 1 At/Wb 11 At/Wb 1111 At/Wb 111 At/Wb 1 At/Wb 11 At/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is None of the listed here From one end of the magnet to another From north pole to south pole From south pole to north pole None of the listed here From one end of the magnet to another From north pole to south pole From south pole to north pole ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Ferrites are a sub-group of Ferri-magnetic material Paramagnetic material Ferro magnetic material Non-magnetic materials Ferri-magnetic material Paramagnetic material Ferro magnetic material Non-magnetic materials ANSWER DOWNLOAD EXAMIANS APP
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