Indicate which of the following material does not retain magnetism permanently

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...

Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials

A. circular B. triangular C. rectangular D. none of the above...

Unit for quantity of electricity is_____________?

A. ampere-hour B. watt C. joule D. coulomb...

The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields______________?

A. meter is surrounded by strong magnetic fields B. a soft iron shielding is used C. a plastic shielding is provided D. a shielding of anon-magnetic material is used...

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...