MHT CET 2021 24th September Evening Shift | Magnetism and Matter Question 22 | Physics

A magnetic dipole of magnetic moment $$\mathrm{M}$$, is freely suspended in a magnetic field of induction B. The minimum and maximum values of potential energy of the dipole, respectively are

$$-\mathrm{MB},+\mathrm{MB}$$

$$0, \mathrm{MB}$$

$$0,2 \mathrm{MB}$$

MB, 0

MHT CET 2021 24th September Morning Shift

MCQ (Single Correct Answer)

-0

A current '$$I$$' is flowing in a conductor of length '$$L$$' when it is bent in the form of a circular loop, its magnetic moment will be

$$\frac{\mathrm{IL}}{4 \pi^2}$$

$$4 \pi \mathrm{L}^2$$

$$\frac{4 \pi}{\mathrm{IL}^2}$$

$$\frac{\mathrm{IL}^2}{4 \pi}$$

MHT CET 2021 23th September Morning Shift

MCQ (Single Correct Answer)

-0

A bar magnet has length $$3 \mathrm{~cm}$$, cross-sectional area $$2 \mathrm{~cm}^2$$ and magnetic moment $$3 \mathrm{~Am}^2$$. The intensity of magnetisation of bar magnet is

$$2 \times 10^5 \mathrm{~A} / \mathrm{m}$$

$$3 \times 10^5 \mathrm{~A} / \mathrm{m}$$

$$4 \times 10^5 \mathrm{~A} / \mathrm{m}$$

$$5 \times 10^5 \mathrm{~A} / \mathrm{m}$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

The relative permeability of iron is 2000. Its absolute permeability in SI unit will be $$\left(\frac{\mu_0}{4 \pi}=10^{-7} \text{SI unit}\right)$$

$$8 \pi \times 10^{-7}$$

$$4 \pi \times 10^{-5}$$

$$8 \pi \times 10^{-4}$$

$$\frac{500}{\pi} \times 10^{-7}$$

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