Magnetism and Electromagnetism The unit for permeability is Wb/At × m At/Wb At/m Wb Wb/At × m At/Wb At/m Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m? 16 AT 8 AT 10 AT 4 AT 16 AT 8 AT 10 AT 4 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is 16 mA 12 mA 1.7 mA 120 mA 16 mA 12 mA 1.7 mA 120 mA ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wire-wound core, an increase in current through the coil Decreases the flux density Causes no change in flux density Increases the flux density Reverses the flux lines Decreases the flux density Causes no change in flux density Increases the flux density Reverses the flux lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When an iron piece is placed in a magnetic field the magnetic lines of force will bend away from their usual paths in order to go away from the piece the iron piece will break the magnetic lines of force will bend away from their usual paths in order to pass through the piece the magnetic field will not be affected the magnetic lines of force will bend away from their usual paths in order to go away from the piece the iron piece will break the magnetic lines of force will bend away from their usual paths in order to pass through the piece the magnetic field will not be affected ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. Paramagnetic Diamagnetic None of the listed here Ferromagnetic Paramagnetic Diamagnetic None of the listed here Ferromagnetic ANSWER DOWNLOAD EXAMIANS APP
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