Magnetism and Electromagnetism In a simple magnetic field the strength of magnet flux is constant and has same value in energy part of the magnetic field decreases continuously from initial value to final value first increases and then decreases till it becomes zero increases continuously from initial value to final value is constant and has same value in energy part of the magnetic field decreases continuously from initial value to final value first increases and then decreases till it becomes zero increases continuously from initial value to final value ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permanent magnet Attracts only ferromagnetic substances Attracts some substances and repels others Attracts ferromagnetic substances and repels all others Attracts all paramagnetic substances and repels others Attracts only ferromagnetic substances Attracts some substances and repels others Attracts ferromagnetic substances and repels all others Attracts all paramagnetic substances and repels others ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Susceptibility is positive for None of these diamagnetic substances ferromagnetic substances non-magnetic substances None of these diamagnetic substances ferromagnetic substances non-magnetic substances ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Diamagnetic materials Paramagnetic materials Ferrites Ferromagnetic materials Diamagnetic materials Paramagnetic materials Ferrites Ferromagnetic materials 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 Be excessive Remain Constant Decrease Increase Be excessive Remain Constant Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 24 AT 240 AT 2.4 AT 0.24 AT 24 AT 240 AT 2.4 AT 0.24 AT ANSWER DOWNLOAD EXAMIANS APP
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