Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 6338 N/Wb 633.8 N/Wb 63.38 N/Wb 63380 N/Wb 6338 N/Wb 633.8 N/Wb 63.38 N/Wb 63380 N/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ability of a material to remain magnetized after removal of the magnetizing force is known as hysteresis reluctance retentivity permeability hysteresis reluctance retentivity permeability ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Degaussing is the process of Remagnetising metallic parts Demagnetising metallic parts Removal of magnetic impurities Removing gases from the materials Remagnetising metallic parts Demagnetising metallic parts Removal of magnetic impurities Removing gases from the materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A material which is slightly repelled by a magnetic field is known as conducting material ferromagnetic material diamagnetic material paramagnetic material conducting material ferromagnetic material diamagnetic material paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the magnetic field collapses direction of the magnetic field reverses magnetic field expands direction of the magnetic field remains unchanged magnetic field collapses direction of the magnetic field reverses magnetic field expands direction of the magnetic field remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When an iron piece is placed in a magnetic field the magnetic lines of force will bend away from their usual paths in order to pass through the piece the iron piece will break the magnetic field will not be affected the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic lines of force will bend away from their usual paths in order to pass through the piece the iron piece will break the magnetic field will not be affected the magnetic lines of force will bend away from their usual paths in order to go away from the piece ANSWER DOWNLOAD EXAMIANS APP
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