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 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 the iron piece will break the magnetic lines of force will bend away from their usual paths in order to pass through the piece ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 2.4 AT 0.24 AT 240 AT 24 AT 2.4 AT 0.24 AT 240 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The change of cross-sectional area of conductor in magnetic field will affect resistance of conductor both of the listed here None of these reluctance of conductor resistance of conductor both of the listed here None of these reluctance of conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The retentivity of material is useful for the construction of Transformers Electromagnets Non-magnetic substances Permanent magnets Transformers Electromagnets Non-magnetic substances Permanent magnets ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 30 At 300 At 187 At 18.75 At 30 At 300 At 187 At 18.75 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ability of a material to remain magnetized after removal of the magnetizing force is known as hysteresis reluctance permeability retentivity hysteresis reluctance permeability retentivity ANSWER DOWNLOAD EXAMIANS APP
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