Magnetism and Electromagnetism Paramagnetic materials have relative permeability 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 slightly less than unity slightly more than unity ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Weak magnet Permanent magnet Temporary Magnet None of the listed here Weak magnet Permanent magnet Temporary Magnet None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil? Increases Decreases First increases and then decreases depending on the depth of iron in¬sertion Remains same Increases Decreases First increases and then decreases depending on the depth of iron in¬sertion Remains same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200? 6 4 12 8 6 4 12 8 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials are a bit inferior conductors of magnetic flux than air. Diamagnetic None of the listed here Dielectric Ferromagnetic Diamagnetic None of the listed here Dielectric Ferromagnetic ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Ferrites Paramagnetic materials Diamagnetic materials Ferromagnetic materials Ferrites Paramagnetic materials Diamagnetic materials Ferromagnetic materials ANSWER DOWNLOAD EXAMIANS APP
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