Magnetism and Electromagnetism A permanent magnet Attracts only ferromagnetic substances Attracts some substances and repels others Attracts all paramagnetic substances and repels others Attracts ferromagnetic substances and repels all others Attracts only ferromagnetic substances Attracts some substances and repels others Attracts all paramagnetic substances and repels others Attracts ferromagnetic substances and repels all others ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be 0.24 N 240 N 2.4 N 24 N 0.24 N 240 N 2.4 N 24 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following materials are diamagnetic? Iron Copper Silver and copper Silver Iron Copper Silver and copper Silver ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. Paramagnetic None of the listed here Diamagnetic Ferromagnetic Paramagnetic None of the listed here Diamagnetic Ferromagnetic ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be 0.01 N 10 N 0.1 N 100 N 0.01 N 10 N 0.1 N 100 N 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 Remain Constant Be excessive Decrease Increase Remain Constant Be excessive Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
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