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 2,000 V 3,125 V 1,000 V 31.25 V 2,000 V 3,125 V 1,000 V 31.25 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Aluminium Soft iron Copper Brass Aluminium Soft iron Copper Brass ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Paramagnetic material Ferromagnetic material Ferrits Diamagnetic material Paramagnetic material Ferromagnetic material Ferrits Diamagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for permeability is Wb/At × m At/m At/Wb Wb Wb/At × m At/m At/Wb Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will Remain Constant Increase Be excessive Decrease Remain Constant Increase Be excessive Decrease ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage reaches zero decreases increases remains constant reaches zero decreases increases remains constant ANSWER DOWNLOAD EXAMIANS APP
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