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? 0.3 AT 300 AT 30 AT 3 AT 0.3 AT 300 AT 30 AT 3 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is From south pole to north pole None of the listed here From north pole to south pole From one end of the magnet to another From south pole to north pole None of the listed here From north pole to south pole From one end of the magnet to another ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetism of a magnet can be destroyed by All of the listed here Hammering Heating By inductive action of another magnet All of the listed here Hammering Heating By inductive action of another magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Susceptibility is positive for ferromagnetic substances non-magnetic substances None of these diamagnetic substances ferromagnetic substances non-magnetic substances None of these diamagnetic substances ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 0.24 AT 240 AT 2.4 AT 24 AT 0.24 AT 240 AT 2.4 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will Decrease Be excessive Remain Constant Increase Decrease Be excessive Remain Constant Increase ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS