Magnetism and Electromagnetism When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon Motion of the magnet Pole strength of the magnet Resistance of the coil Number of turns of the coil Motion of the magnet Pole strength of the magnet Resistance of the coil Number of turns of the coil ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will None of the listed here Increases Remain same Decreases None of the listed here Increases Remain same Decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Paramagnetic materials have relative permeability slightly less than unity slightly more than unity equal to unity equal to that ferromagnetic mate rials slightly less than unity slightly more than unity equal to unity equal to that ferromagnetic mate rials 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? 1 At/Wb 11 At/Wb 111 At/Wb 1111 At/Wb 1 At/Wb 11 At/Wb 111 At/Wb 1111 At/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Ferrites are a sub-group of Paramagnetic material Ferro magnetic material Non-magnetic materials Ferri-magnetic material Paramagnetic material Ferro magnetic material Non-magnetic materials Ferri-magnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for permeability is Wb At/m At/Wb Wb/At × m Wb At/m At/Wb Wb/At × m ANSWER DOWNLOAD EXAMIANS APP
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