Magnetism and Electromagnetism When an iron piece is placed in a magnetic field 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 lines of force will bend away from their usual paths in order to go away from the piece the magnetic field will not be affected 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 lines of force will bend away from their usual paths in order to go away from the piece the magnetic field will not be affected ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 240 AT 2.4 AT 0.24 AT 24 AT 240 AT 2.4 AT 0.24 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A magnetic field exists around Iron Copper Aluminium Moving Charges Iron Copper Aluminium Moving Charges ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit of flux is the same as that of Reluctance Pole strength Resistance Permanance Reluctance Pole strength Resistance Permanance ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 63.38 N/Wb 63380 N/Wb 6338 N/Wb 633.8 N/Wb 63.38 N/Wb 63380 N/Wb 6338 N/Wb 633.8 N/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Paramagnetic materials Diamagnetic materials Ferromagnetic materials Ferrites Paramagnetic materials Diamagnetic materials Ferromagnetic materials Ferrites ANSWER DOWNLOAD EXAMIANS APP