A. from south pole to north pole
B. from north pole to south pole
C. from one end of the magnet to another
D. none of the above
The direction of magnetic lines of force is________________? Read More »
Magnetism and Electromagnetism A. which is a good conductor
B. which is a bad conductor
C. which is a strong magnet
D. through which the magnetic lines of force can pass very easily
A permeable substance is one_____________? Read More »
Magnetism and Electromagnetism A. iron
B. copper
C. aluminium
D. moving charges
A magnetic field exists around____________? Read More »
Magnetism and Electromagnetism A. weak magnets
B. temporary magnets
C. permanent magnets
D. none of the above
The materials having low retentivity are suitable for making_____________? Read More »
Magnetism and Electromagnetism A. field strength
B. inductance
C. flux density
D. flux
Tesla is a unit of_____________? Read More »
Magnetism and Electromagnetism A. paramagnetic
B. diamagnetic
C. ferromagnetic
D. none of the above
Ferrites are materials Read More »
Magnetism and Electromagnetism A. proportional to 7
B. proportional to X
C. proportional to distance between the conductors
D. inversely proportional to I
A. little
B. lower
C. higher
D. zero
Air gap has_________eluctance as compared to iron or steel path? Read More »
Magnetism and Electromagnetism A. Relative permeability
B. Magnetic field intensity
C. Flux density
D. Magnetic potential
Which of the following is a vector quantity ? Read More »
Magnetism and Electromagnetism A. ferromagnetic material
B. diamagnetic material
C. paramagnetic material
D. conducting material
A material which is slightly repelled by a magnetic field is known as_____________? Read More »
Magnetism and Electromagnetism