MEDIUM
12th Maharashtra Board
IMPORTANT
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What should be retentivity and coercivity of permanent magnet? 

Important Questions on Magnetic Materials

EASY
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 2
Explain Curie law for a paramagnetic substance?
EASY
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 2
Obtain an expression for magnetic moment of an orbital electron.
EASY
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 2
What does the area of hysteresis loop indicate?
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 2
Explain one application of electromagnet.
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 3
When a plate of magnetic material of size 10cm×0.5cm×0.2cm (length , breadth, and thickness respectively) is located in the magnetising field 0.5×104Am−1 then a magnetic moment of 0.5Am2 is induced. Find out magnetic induction in the plate. 
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 4
A rod of magnetic material of cross section 0.25 cm2 is located in 4000 Am-1 magnetising field. Magnetic flux passing through the rod is 25×10−6Wb. Find out relative permeability. 
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 4
A rod of magnetic material of cross section 0.25 cm2 is located in 4000 Am-1 magnetising field. Magnetic flux passing through the rod is 25×10−6Wb. Find out magnetic susceptibility
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 11 - Magnetic Materials>Exercises>Q 4
A rod of magnetic material of cross-section 0.25 cm2 is located in the 4000 Am-1 magnetising field. Magnetic flux passing through the rod is 25×10−6Wb . Find out the magnetisation of the rod.