Advertisements
Advertisements
Question
If the magnetizing field on a ferromagnetic material is increased, its permeability ______.
Options
decreases
increases
remains unchanged
first decreases and then increases
Solution
If the magnetizing field on a ferromagnetic material is increased, its permeability decreases.
APPEARS IN
RELATED QUESTIONS
The susceptibility of a magnetic material is 0·9853. Identify the type of magnetic material. Draw the modification of the field pattern on keeping a piece of this material in a uniform magnetic field.
Choose the correct option:
A rectangular magnet suspended freely has a period of oscillation equal to T. Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely. Its period of oscillation is T′, the ratio of T′/T is ______.
The earth’s field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion?
If a toroid uses bismuth for its core, will the field in the core be (slightly) greater or (slightly) less than when the core is empty?
Explain qualitatively on the basis of domain picture the irreversibility in the magnetisation curve of a ferromagnet.
Explain quantitatively the order of magnitude difference between the diamagnetic susceptibility of N2 (~5 × 10–9) (at STP) and Cu (~10–5).
What is magnetic hysterisis?
Explain ferromagnetism on the basis of the domain theory.