Magnetism and Electromagnetism An electromagnetic field exists only when there is current an increasing current decreasing current voltage current an increasing current decreasing current voltage ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 2,400 At 240 At 2.4 At 24 At 2,400 At 240 At 2.4 At 24 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Diamagnetic material Ferrits Ferromagnetic material Paramagnetic material Diamagnetic material Ferrits Ferromagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making None of the listed here Permanent magnet Temporary Magnet Weak magnet None of the listed here Permanent magnet Temporary Magnet Weak magnet 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 100 At 300 At 150 At 200 At 100 At 300 At 150 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is proportional to distance between the conductors proportional to 7 inversely proportional to I proportional to X proportional to distance between the conductors proportional to 7 inversely proportional to I proportional to X ANSWER DOWNLOAD EXAMIANS APP
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