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प्रश्न
Which of the following cannot modify an external magnetic field as shown in the figure?
विकल्प
Nickel
Silicon
Sodium chloride
Copper
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उत्तर
Sodium chloride
Explanation:
The material that cannot modify an external magnetic field is sodium chloride, as it is completely non-magnetic and does not interact with the field in any way.
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संबंधित प्रश्न
A meter gauge train is heading north with speed 54 km/hr in earth's magnetic field 3 x 10-4T. The e.m.f. induced across the axle joining the wheels is ..........
(a) 0.45 mV
(b) 4.5 mV
(c) 45 mV
(d) 450 m V
Answer the following question.
Write three points of differences between para-, dia- and ferromagnetic materials, giving one example for each.
For a paramagnetic substance, the magnetic susceptibility is ______.
The susceptibility of a magnetic material is positive and small. The material is ______.
Assertion: A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.
Reason: The magnetisation does not depend on temperature.
The magnetic susceptibility for diamagnetic materials is ______.
When a ferromagnetic material is created above its curie temperature
If the magnetizing field on a ferromagnetic material is increased, its permeability ______.
An ammeter of resistance R gives a full-scale deflection when a current of 2 A passes through it. If it is measured with a maximum current of 10 A, the required shunt is ______.
- Assertion (A): Diamagnetic substances exhibit magnetism.
- Reason (R): Diamagnetic materials do not have a permanent magnetic dipole moment.
