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Magnetism — Set 5

Physics · चुंबकत्व · Questions 4150 of 50

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1

Relative permeability (μr) is defined as?

2

Magnetic susceptibility (χ) in simple SI form is commonly defined as?

3

In vacuum, the relation between magnetic flux density B and field strength H is?

4

The value of vacuum permeability μ0 is commonly written as?

5

For a long air-core solenoid, the magnetic field inside is commonly approximated as?

6

Which change will generally increase the strength of an electromagnet most directly?

7

Retentivity of a magnetic material refers to its ability to?

8

Coercivity of a magnetic material refers to the magnitude of reverse field needed to?

9

The area of a hysteresis loop represents?

10

For many paramagnetic materials, Curie law states that magnetic susceptibility is proportional to?