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प्रश्न
What happens to the domains in a ferromagnetic material in the presence of external magnetic field?
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उत्तर
- The domains having magnetic moments parallel to the field glow bigger in size.
- The other domains (not parallel to the field) are rotated so that they are aligned with the field.
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संबंधित प्रश्न
Explain the following with suitable examples:
Paramagnetism
Example of ferromagnetic substance is ____________.
Substances which are weakly repelled in magnetic field are known as ____________.
Substances that are strongly attracted by the applied magnetic field and can be permanently magnetized are ____________.
Fe3O4 is ____________.
Which type of substances would make better permanent magnets?
The heat of combustion of a substance is:
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
Which of the following statements are correct?
- Electric monopoles do not exist whereas magnetic monopoles exist.
- Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and confined.
- Magnetic field lines are completely confined within a toroid.
- Magnetic field lines inside a bar magnet are not parallel.
- χ = -1 is the condition for a perfect diamagnetic material, where x is its magnetic susceptibility.
The value of aluminium susceptibility is 2.2 × 10-5. The percentage increase in the magnetic field if space within a current carrying toroid is filled with aluminium is `"x"/10^4`. Then the value of x is ______.
