Temporary magnets are used in______________?

Related Mcqs:

In a simple magnetic field the strength of magnet flux_______________?

A. is constant and has same value in energy part of the magnetic field B. increases continuously from initial value to final value C. decreases continuously from initial value to final value D. first increases and then decreases till it becomes zero...

The change of cross-sectional area of conductor in magnetic field will affect______________?

A. reluctance of conductor B. resistance of conductor C. A. and B. both in the same way D. none of the above...

If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity?

A. less than that of disc but in opposite direction B. equal to that of disc and in the same direction C. equal to that of disc and in the opposite direction D. less than that of disc and in the same direction...

Substances which have permeability less than the permeability of free space are known as_____________?

A. ferromagnetic B. paramagnetic C. diamagnetic D. bipolar...

The ratio of intensity of magnetisation to the magnetisation force is known as_____________?

A. flux density B. susceptibility C. relative permeability D. none of the above...