Question 33 of 57
A magnetic needle lying parallel to a magnetic field requires units of work to turn it through . The torque needed to maintain the needle in this position will be
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Answer: (A)
Magnetic Properties of Matter
JEE Main level, single correct, medium
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More Physics practice
- Magnetic Properties of MatterTwo identical small bar magnets each of dipole moment J/T are placed at a center to center separation of cm, with their axes perpendicular to each other as shown in figure. The value of magnetic field at the point P midway between the magnets is T. The value of is ______.
( Tm/A)
- Magnetic Properties of MatterA solenoid has a core made of material with relative permeability . The magnetic field produced in the interior of solenoid is T. The magnetic intensity in SI units is . The value of is ______.
(Free space permeability SI units.) - Magnetic Properties of MatterGiven below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason(R).
Assertion (A) : Magnetic monopoles do not exist.
Reason (R) : Magnetic field lines are continuous and form closed loops.
In the light of the above statements, choose the most appropriate answer from the options given below : - Magnetic Properties of MatterThe percentage increase in magnetic field (B) when space within a current carrying solenoid is filled with magnesium (magnetic susceptibility is :
- Magnetic Properties of MatterA solenoid having area and length ' ' is filled with a material having relative permeability 2. The magnetic energy stored in the solenoid is :
- Magnetic Properties of MatterThe relationship between the magnetic susceptibility and the magnetic permeability is given by :
( is the permeability of free space and is relative permeability)
JEE Main Physics practice question on Magnetic Properties of Matter (Magnetism and Properties of Magnet), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.