Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 3 AT 300 AT 0.3 AT 30 AT 3 AT 300 AT 0.3 AT 30 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Ferrits Ferromagnetic material Diamagnetic material Paramagnetic material Ferrits Ferromagnetic material Diamagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism In the left hand rule, forefinger always represents direction of force on the conductor current Voltage magnetic field direction of force on the conductor current Voltage magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The bar magnet has Monopole moment Both dipole and monopole moment Dipole moment None of the listed here Monopole moment Both dipole and monopole moment Dipole moment None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Permanent magnet Weak magnet Temporary Magnet None of the listed here Permanent magnet Weak magnet Temporary Magnet None of the listed here 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 decreases continuously from initial value to final value first increases and then decreases till it becomes zero increases continuously from initial value to final value is constant and has same value in energy part of the magnetic field decreases continuously from initial value to final value first increases and then decreases till it becomes zero ANSWER DOWNLOAD EXAMIANS APP
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