Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 18.75 At 300 At 30 At 187 At 18.75 At 300 At 30 At 187 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be 24 N 0.24 N 2.4 N 240 N 24 N 0.24 N 2.4 N 240 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is From south pole to north pole From north pole to south pole None of the listed here From one end of the magnet to another From south pole to north pole From north pole to south pole None of the listed here From one end of the magnet to another ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for reluctance is tesla At/Wb Wb At/m tesla At/Wb Wb At/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is 1,000 V 2,000 V 3,125 V 31.25 V 1,000 V 2,000 V 3,125 V 31.25 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials are a bit inferior conductors of magnetic flux than air. Ferromagnetic Dielectric Diamagnetic None of the listed here Ferromagnetic Dielectric Diamagnetic None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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