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Magnetic Properties of Matter

JEE Main level, single correct, medium

56 of 57

Question 56 of 57

The materials suitable for making electromagnets should have

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Answer: (B) low retentivity and low coercivity

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JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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More Physics practice

Magnetic Properties of MatterTwo identical small bar magnets each of dipole moment $3\sqrt{5}$ J/T are placed at a center to center separation of $10$ 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 $\alpha \times 10^{-3}$ T. The value of $\alpha$ is ______.
( $\mu_0=4\pi \times 10^{-7}$ Tm/A)
Magnetic Properties of MatterA solenoid has a core made of material with relative permeability $400$ . The magnetic field produced in the interior of solenoid is $1.0$ T. The magnetic intensity in SI units is $\alpha \times 10^5$ . The value of $\alpha$ is ______.
(Free space permeability $\mu_0=4\pi \times 10^{-7}$ 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 $\left.\chi_{\mathrm{mg}}=1.2 \times 10^{-5}\right)$ is :
Magnetic Properties of MatterA solenoid having area $A$ and length ' $l$ ' 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 $(\chi)$ and the magnetic permeability $(\mu)$ is given by :
( $\mu_0$ is the permeability of free space and $\mu_{\mathrm{r}}$ is relative permeability)

JEE Main Physics practice question on Magnetic Properties of Matter (Magnetic Materials and their Properties), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.