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? 300 AT 30 AT 3 AT 0.3 AT 300 AT 30 AT 3 AT 0.3 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for reluctance is At/Wb At/m tesla Wb At/Wb At/m tesla Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage remains constant decreases reaches zero increases remains constant decreases reaches zero increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is From one end of the magnet to another From north pole to south pole None of the listed here From south pole to north pole From one end of the magnet to another From north pole to south pole None of the listed here From south pole to north pole ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the direction of the magnetic field remains unchanged direction of the magnetic field reverses magnetic field collapses magnetic field expands direction of the magnetic field remains unchanged direction of the magnetic field reverses magnetic field collapses magnetic field expands 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 240 N 2.4 N 24 N 0.24 N 240 N 2.4 N ANSWER DOWNLOAD EXAMIANS APP
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