MEDIUM
12th West Bengal Board
IMPORTANT
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The flux through a certain toroid changes from 0.65 to 0.91 mWb when the air core is replaced by another material. What are the relations permeability and the permeability of the material? 

Important Questions on Magnetic Properties of Matter

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 13
A solenoid is 40 cm long, has cross-sectional area 8 cm2 and is wound with 300 turns of wire that carry a current of 1.2 A. The relative permeability of its iron core is 600. Compute B for an interior point
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 13
A solenoid is 40 cm long, has cross-sectional area 8 cm2 and is wound with 300 turns of wire that carry a current of 1.2 A. The relative permeability of its iron core is 600. Compute the flux through the solenoid.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 1
Resultant force acting on a diamagnetic material in a magnetic field is in direction
 
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 2
The magnetic susceptibility of a paramagnetic substance at -73°C is 0.0060 then its value at -173°C will be 
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 3
Ferromagnetic material used in a transformer must have
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 4
On applying an external magnetic field, to a ferromagnetic substance domains
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 5
Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve)
 
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 11 - Magnetic Properties of Matter>EXERCISE 11>Q 6
Relative permittivity and permeability of material are εr are μr respectively. Which of the following value of these quantities are allowed for a diamagnetic material?