Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Flux density increases Flux density decreases Core area increases Core length increases Flux density increases Flux density decreases Core area increases Core length increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 2,400 At 24 At 2.4 At 240 At 2,400 At 24 At 2.4 At 240 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetic moment is a universal constant pole strength vector quantity scalar quantity universal constant pole strength vector quantity scalar quantity ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is 1,000 V 3,125 V 2,000 V 31.25 V 1,000 V 3,125 V 2,000 V 31.25 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Permanent magnet None of the listed here Temporary Magnet Weak magnet Permanent magnet None of the listed here Temporary Magnet Weak magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? It starts rotating It assures a position which follows a line of magnetic flux None of the listed here It assures a position right angle to magnetic field It starts rotating It assures a position which follows a line of magnetic flux None of the listed here It assures a position right angle to magnetic field ANSWER DOWNLOAD EXAMIANS APP
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