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 2.4 N 0.24 N 240 N 24 N 2.4 N 0.24 N 240 N 24 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 Wb? 90,000 At/Wb 14,400 At/Wb 9,000 At/Wb 1,440 At/Wb 90,000 At/Wb 14,400 At/Wb 9,000 At/Wb 1,440 At/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Strength of an electromagnet can be increased by All of the listed here Increasing the cross-sectional area Increasing current supply Increasing the number of turns All of the listed here Increasing the cross-sectional area Increasing current supply Increasing the number of turns ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of a magnetic field within a magnet is back to front from south to north front to back from north to south back to front from south to north front to back from north to south ANSWER DOWNLOAD EXAMIANS APP
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? 200 At 300 At 100 At 150 At 200 At 300 At 100 At 150 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. None of the listed here Diamagnetic Ferromagnetic Paramagnetic None of the listed here Diamagnetic Ferromagnetic Paramagnetic ANSWER DOWNLOAD EXAMIANS APP
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