Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 240 At 2,400 At 2.4 At 24 At 240 At 2,400 At 2.4 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is From north pole to south pole From south pole to north pole None of the listed here From one end of the magnet to another From north pole to south pole From south pole to north pole None of the listed here From one end of the magnet to another ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. Ferromagnetic Paramagnetic None of the listed here Diamagnetic Ferromagnetic Paramagnetic None of the listed here Diamagnetic 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 pass through the piece 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 field will not be affected the magnetic lines of force will bend away from their usual paths in order to pass through the piece 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 field will not be affected 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 A magnetic field exists around Iron Aluminium Copper Moving Charges Iron Aluminium Copper Moving Charges ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS