The Bar Magnet
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PHXII05:MAGNETISM and MATTER

360622 A metal wire is of length \(l\) and magnetic moment \(M\). What is the new magnetic moment if it is bent in \(L\)-shape?

1 \(2 M\)
2 \(\dfrac{M}{2}\)
3 \(M\)
4 \(\dfrac{M}{\sqrt{2}}\)
MHTCET - 2022
PHXII05:MAGNETISM and MATTER

360623 Assertion :
Magnetic moment of an atom is due to both, the orbital motion and spin motion of every electron.
Reason :
A charged particle at rest produces a magnetic field.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII05:MAGNETISM and MATTER

360624 The magnetic moment of a bar magnet is 0.256 amp. \(m^{2}\). Its pole strength is 400 milli amp.m. It is cut into two equal pieces and these two pieces are arranged at right angles to each with their unlike poles in contact (or like poles in contact). The resultant magnetic moment of the system is

1 \(\sqrt 2 \times 256 \times {10^{ - 3}}\,A{m^2}\)
2 \(250 \times {10^{ - 3}}\,A{m^2}\)
3 \(\frac{{256}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
4 \(\frac{{128}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
PHXII05:MAGNETISM and MATTER

360625 Two identical short bar magnets are arranged as shown in figure. The resultant induction at corner \(B\) is
supporting img

1 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{3 M}{d^{3}}\)
2 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{2 M}{d^{3}}\)
3 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{M}{d^{3}}\)
4 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{4 M}{d^{3}}\)
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PHXII05:MAGNETISM and MATTER

360622 A metal wire is of length \(l\) and magnetic moment \(M\). What is the new magnetic moment if it is bent in \(L\)-shape?

1 \(2 M\)
2 \(\dfrac{M}{2}\)
3 \(M\)
4 \(\dfrac{M}{\sqrt{2}}\)
MHTCET - 2022
PHXII05:MAGNETISM and MATTER

360623 Assertion :
Magnetic moment of an atom is due to both, the orbital motion and spin motion of every electron.
Reason :
A charged particle at rest produces a magnetic field.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII05:MAGNETISM and MATTER

360624 The magnetic moment of a bar magnet is 0.256 amp. \(m^{2}\). Its pole strength is 400 milli amp.m. It is cut into two equal pieces and these two pieces are arranged at right angles to each with their unlike poles in contact (or like poles in contact). The resultant magnetic moment of the system is

1 \(\sqrt 2 \times 256 \times {10^{ - 3}}\,A{m^2}\)
2 \(250 \times {10^{ - 3}}\,A{m^2}\)
3 \(\frac{{256}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
4 \(\frac{{128}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
PHXII05:MAGNETISM and MATTER

360625 Two identical short bar magnets are arranged as shown in figure. The resultant induction at corner \(B\) is
supporting img

1 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{3 M}{d^{3}}\)
2 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{2 M}{d^{3}}\)
3 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{M}{d^{3}}\)
4 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{4 M}{d^{3}}\)
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PHXII05:MAGNETISM and MATTER

360622 A metal wire is of length \(l\) and magnetic moment \(M\). What is the new magnetic moment if it is bent in \(L\)-shape?

1 \(2 M\)
2 \(\dfrac{M}{2}\)
3 \(M\)
4 \(\dfrac{M}{\sqrt{2}}\)
MHTCET - 2022
PHXII05:MAGNETISM and MATTER

360623 Assertion :
Magnetic moment of an atom is due to both, the orbital motion and spin motion of every electron.
Reason :
A charged particle at rest produces a magnetic field.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII05:MAGNETISM and MATTER

360624 The magnetic moment of a bar magnet is 0.256 amp. \(m^{2}\). Its pole strength is 400 milli amp.m. It is cut into two equal pieces and these two pieces are arranged at right angles to each with their unlike poles in contact (or like poles in contact). The resultant magnetic moment of the system is

1 \(\sqrt 2 \times 256 \times {10^{ - 3}}\,A{m^2}\)
2 \(250 \times {10^{ - 3}}\,A{m^2}\)
3 \(\frac{{256}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
4 \(\frac{{128}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
PHXII05:MAGNETISM and MATTER

360625 Two identical short bar magnets are arranged as shown in figure. The resultant induction at corner \(B\) is
supporting img

1 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{3 M}{d^{3}}\)
2 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{2 M}{d^{3}}\)
3 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{M}{d^{3}}\)
4 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{4 M}{d^{3}}\)
For More Updates join with Us
PHXII05:MAGNETISM and MATTER

360622 A metal wire is of length \(l\) and magnetic moment \(M\). What is the new magnetic moment if it is bent in \(L\)-shape?

1 \(2 M\)
2 \(\dfrac{M}{2}\)
3 \(M\)
4 \(\dfrac{M}{\sqrt{2}}\)
MHTCET - 2022
PHXII05:MAGNETISM and MATTER

360623 Assertion :
Magnetic moment of an atom is due to both, the orbital motion and spin motion of every electron.
Reason :
A charged particle at rest produces a magnetic field.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII05:MAGNETISM and MATTER

360624 The magnetic moment of a bar magnet is 0.256 amp. \(m^{2}\). Its pole strength is 400 milli amp.m. It is cut into two equal pieces and these two pieces are arranged at right angles to each with their unlike poles in contact (or like poles in contact). The resultant magnetic moment of the system is

1 \(\sqrt 2 \times 256 \times {10^{ - 3}}\,A{m^2}\)
2 \(250 \times {10^{ - 3}}\,A{m^2}\)
3 \(\frac{{256}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
4 \(\frac{{128}}{{\sqrt 2 }} \times {10^{ - 3}}\,A{m^2}\)
PHXII05:MAGNETISM and MATTER

360625 Two identical short bar magnets are arranged as shown in figure. The resultant induction at corner \(B\) is
supporting img

1 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{3 M}{d^{3}}\)
2 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{2 M}{d^{3}}\)
3 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{M}{d^{3}}\)
4 \(\dfrac{\mu_{o}}{4 \pi} \dfrac{4 M}{d^{3}}\)
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