Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is a steady current varying voltage an electromagnetic field a permanent magnetic field a steady current varying voltage an electromagnetic field a permanent magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ratio of intensity of magnetisation to the magnetisation force is known as Relatice permeability None of the listed here Susceptibility Flux density Relatice permeability None of the listed here Susceptibility Flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil? Decreases Remains same Increases First increases and then decreases depending on the depth of iron in¬sertion Decreases Remains same Increases First increases and then decreases depending on the depth of iron in¬sertion ANSWER DOWNLOAD EXAMIANS APP
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? 200 At 150 At 300 At 100 At 200 At 150 At 300 At 100 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be 2M M M/4 M/2 2M M M/4 M/2 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Ferromagnetic materials Diamagnetic materials Paramagnetic materials Ferrites Ferromagnetic materials Diamagnetic materials Paramagnetic materials Ferrites ANSWER DOWNLOAD EXAMIANS APP
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