Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? None of the listed here It starts rotating It assures a position which follows a line of magnetic flux It assures a position right angle to magnetic field None of the listed here It starts rotating It assures a position which follows a line of magnetic flux It assures a position right angle to magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Ferro magnetic material Diamagnetic material Paramagnetic material Bipolar Ferro magnetic material Diamagnetic material Paramagnetic material Bipolar ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wire-wound core, an increase in current through the coil Increases the flux density Decreases the flux density Reverses the flux lines Causes no change in flux density Increases the flux density Decreases the flux density Reverses the flux lines Causes no change in flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a ferromagnetic material? Aluminium Nickel Copper Tungsten Aluminium Nickel Copper Tungsten ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 150 At 200 At 300 At 100 At 150 At 200 At 300 At 100 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following materials are diamagnetic? Silver and copper Silver Copper Iron Silver and copper Silver Copper Iron ANSWER DOWNLOAD EXAMIANS APP
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