Magnetism and Electromagnetism A permanent magnet 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 Attracts ferromagnetic substances and repels all others Attracts only ferromagnetic substances 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 Increase Remain Constant Decrease Be excessive Increase Remain Constant Decrease Be excessive ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Temporary Magnet Weak magnet None of the listed here Permanent magnet Temporary Magnet Weak magnet None of the listed here Permanent magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2? 91 T 917 T 9.7 T 91.7 T 91 T 917 T 9.7 T 91.7 T ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Susceptibility is positive for None of these non-magnetic substances diamagnetic substances ferromagnetic substances None of these non-magnetic substances diamagnetic substances ferromagnetic substances ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is expected to have the maximum permeability ? Zinc Ebolite Copper Brass Zinc Ebolite Copper Brass ANSWER DOWNLOAD EXAMIANS APP
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