Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? It assures a position right angle to magnetic field It starts rotating None of the listed here It assures a position which follows a line of magnetic flux It assures a position right angle to magnetic field It starts rotating None of the listed here It assures a position which follows a line of magnetic flux ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the net magnetic moment should be zero? antiferromagnetic materials antiferrimagnetic materials ferrimagnetic materials diamagnetic materials antiferromagnetic materials antiferrimagnetic materials ferrimagnetic materials diamagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is 120 mA 16 mA 1.7 mA 12 mA 120 mA 16 mA 1.7 mA 12 mA ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following type of materials are not very important for engineering applications? Ferro magnetic material Diamagnetic material Paramagnetic material None of the listed here Ferro magnetic material Diamagnetic material Paramagnetic material None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density doubles remains the same decreases increases doubles remains the same decreases increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the current through the coil of an electromagnet reverses, the direction of the magnetic field remains unchanged magnetic field expands magnetic field collapses direction of the magnetic field reverses direction of the magnetic field remains unchanged magnetic field expands magnetic field collapses direction of the magnetic field reverses ANSWER DOWNLOAD EXAMIANS APP
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