Magnetism and Electromagnetism The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength? 0.25 AT/m 2500 AT/m 250 AT/m 25 AT/m 0.25 AT/m 2500 AT/m 250 AT/m 25 AT/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Copper Aluminium Brass Soft iron Copper Aluminium Brass Soft iron ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Diamagnetic material Ferrits Paramagnetic material Ferromagnetic material Diamagnetic material Ferrits Paramagnetic material Ferromagnetic material 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
Magnetism and Electromagnetism The unit of relative permeability is Hennry Its dimensionless None of the listed here Hennry/meter Hennry Its dimensionless None of the listed here Hennry/meter ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m? 11 At/Wb 1 At/Wb 111 At/Wb 1111 At/Wb 11 At/Wb 1 At/Wb 111 At/Wb 1111 At/Wb ANSWER DOWNLOAD EXAMIANS APP
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