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 2.4 N 240 N 0.24 N 24 N 2.4 N 240 N 0.24 N 24 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength? 25 AT/m 0.25 AT/m 250 AT/m 2500 AT/m 25 AT/m 0.25 AT/m 250 AT/m 2500 AT/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the magnetic field collapses direction of the magnetic field reverses magnetic field expands direction of the magnetic field remains unchanged magnetic field collapses direction of the magnetic field reverses magnetic field expands direction of the magnetic field remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The stray line of magnetic flux is defined as A line of magnetic flux in a non-uniform field A line vertical to the flux lines A line of magnetic flux which does not follow the designed path The mean length of a ring shaped coil A line of magnetic flux in a non-uniform field A line vertical to the flux lines A line of magnetic flux which does not follow the designed path The mean length of a ring shaped coil ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. None of the listed here Paramagnetic Ferromagnetic Diamagnetic None of the listed here Paramagnetic Ferromagnetic Diamagnetic ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The most effective and quickest may of making a magnet from soft iron is by Placing it inside a coil carrying current Rubbing with another magnet The use of permanent magnet Induction Placing it inside a coil carrying current Rubbing with another magnet The use of permanent magnet Induction ANSWER DOWNLOAD EXAMIANS APP
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