Magnetism and Electromagnetism A permanent magnet Attracts ferromagnetic substances and repels all others Attracts only ferromagnetic substances Attracts all paramagnetic substances and repels others Attracts some substances and repels others Attracts ferromagnetic substances and repels all others Attracts only ferromagnetic substances Attracts all paramagnetic substances and repels others Attracts some substances and repels others ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetism of a magnet can be destroyed by Heating All of the listed here By inductive action of another magnet Hammering Heating All of the listed here By inductive action of another magnet Hammering ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ability of a material to remain magnetized after removal of the magnetizing force is known as permeability retentivity reluctance hysteresis permeability retentivity reluctance hysteresis ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The uniform magnetic field is The field in which all lines of magnetic flux are parallel and equidistant None of the listed here The field of a single conductor The field of a set of parallel conductors The field in which all lines of magnetic flux are parallel and equidistant None of the listed here The field of a single conductor The field of a set of parallel conductors ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 240 At 2.4 At 2,400 At 24 At 240 At 2.4 At 2,400 At 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 Increases Decreases None of the listed here Remain same Increases Decreases None of the listed here Remain same ANSWER DOWNLOAD EXAMIANS APP
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