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 Decrease Be excessive Increase Remain Constant Decrease Be excessive Increase Remain Constant ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M/2 M 2M M/4 M/2 M 2M M/4 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The bar magnet has Monopole moment Dipole moment Both dipole and monopole moment None of the listed here Monopole moment Dipole moment Both dipole and monopole moment None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ability of a material to remain magnetized after removal of the magnetizing force is known as permeability hysteresis retentivity reluctance permeability hysteresis retentivity reluctance ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is varying voltage an electromagnetic field a steady current a permanent magnetic field varying voltage an electromagnetic field a steady current a permanent magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? It assures a position right angle to magnetic field It assures a position which follows a line of magnetic flux None of the listed here It starts rotating It assures a position right angle to magnetic field It assures a position which follows a line of magnetic flux None of the listed here It starts rotating ANSWER DOWNLOAD EXAMIANS APP
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