Magnetism and Electromagnetism A keeper is used to Change the direction of magnetic lines Provide a closed path for flux Amplify flux Restore lost flux Change the direction of magnetic lines Provide a closed path for flux Amplify flux Restore lost flux ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Susceptibility is positive for None of these non-magnetic substances diamagnetic substances ferromagnetic substances None of these non-magnetic substances diamagnetic substances ferromagnetic substances ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 30 At 187 At 18.75 At 300 At 30 At 187 At 18.75 At 300 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Nickel Chromium Tungsten Cobalt Nickel Chromium Tungsten Cobalt ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is From north pole to south pole From south pole to north pole From one end of the magnet to another None of the listed here From north pole to south pole From south pole to north pole From one end of the magnet to another None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism In the left hand rule, forefinger always represents magnetic field current direction of force on the conductor Voltage magnetic field current direction of force on the conductor Voltage ANSWER DOWNLOAD EXAMIANS APP
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