Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the 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 magnetic field collapses direction of the magnetic field reverses ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Paramagnetic materials Ferromagnetic materials Ferrites Diamagnetic materials Paramagnetic materials Ferromagnetic materials Ferrites Diamagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit of flux is the same as that of Pole strength Reluctance Resistance Permanance Pole strength Reluctance Resistance Permanance ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A keeper is used to Provide a closed path for flux Restore lost flux Amplify flux Change the direction of magnetic lines Provide a closed path for flux Restore lost flux Amplify flux Change the direction of magnetic lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permeable substance is one which is a bad conductor through which the magnetic lines of force can pass very easily which is a good conductor which is a strong magnet which is a bad conductor through which the magnetic lines of force can pass very easily which is a good conductor which is a strong magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism In a simple magnetic field the strength of magnet flux increases continuously from initial value to final value is constant and has same value in energy part of the magnetic field first increases and then decreases till it becomes zero decreases continuously from initial value to final value increases continuously from initial value to final value is constant and has same value in energy part of the magnetic field first increases and then decreases till it becomes zero decreases continuously from initial value to final value ANSWER DOWNLOAD EXAMIANS APP
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