Magnetism and Electromagnetism The unit for permeability is At/Wb At/m Wb Wb/At × m At/Wb At/m Wb Wb/At × m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 240 At 2,400 At 2.4 At 24 At 240 At 2,400 At 2.4 At 24 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Ferromagnetic material Diamagnetic material Paramagnetic material Ferrits Ferromagnetic material Diamagnetic material Paramagnetic material Ferrits ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be 0.1 N 100 N 0.01 N 10 N 0.1 N 100 N 0.01 N 10 N 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 Be excessive Remain Constant Increase Decrease Be excessive Remain Constant Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is varying voltage a steady current a permanent magnetic field an electromagnetic field varying voltage a steady current a permanent magnetic field an electromagnetic field ANSWER DOWNLOAD EXAMIANS APP
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