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A long thin uniformly magnetized needle of hard steel length 12 cm is suspended by a torsionless suspension and makes free, small angle oscillations about an axis through the center in a honzontal plane in the earth's magnetic field. The period of oscillation is four seconds. The density of magnetization of steel is
  • a)
    4.6 Am-1
  • b)
    4.6 x 105Am-1
  • c)
    4.6 x 10-5 Am-1
  • d)
    4.6 x 1012 Am-1
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A long thin uniformly magnetized needle of hard steel length 12 cm is ...
Let μ be the magnetic moment of the steel needle. The potential energy in the earth’s magnetic field.







T = 4s
B = 5 x 10 -5 wm-2
M → Magnetization
Using (i), (ii) and (iii)
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A long thin uniformly magnetized needle of hard steel length 12 cm is suspended by a torsionless suspension and makes free, small angle oscillations about an axis through the center in a honzontal plane in the earth's magnetic field. The period of oscillation is four seconds. The density of magnetization of steel isa)4.6 Am-1b)4.6 x105Am-1c)4.6 x 10-5 Am-1d)4.6 x 1012 Am-1Correct answer is option 'B'. Can you explain this answer?
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A long thin uniformly magnetized needle of hard steel length 12 cm is suspended by a torsionless suspension and makes free, small angle oscillations about an axis through the center in a honzontal plane in the earth's magnetic field. The period of oscillation is four seconds. The density of magnetization of steel isa)4.6 Am-1b)4.6 x105Am-1c)4.6 x 10-5 Am-1d)4.6 x 1012 Am-1Correct answer is option 'B'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about A long thin uniformly magnetized needle of hard steel length 12 cm is suspended by a torsionless suspension and makes free, small angle oscillations about an axis through the center in a honzontal plane in the earth's magnetic field. The period of oscillation is four seconds. The density of magnetization of steel isa)4.6 Am-1b)4.6 x105Am-1c)4.6 x 10-5 Am-1d)4.6 x 1012 Am-1Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A long thin uniformly magnetized needle of hard steel length 12 cm is suspended by a torsionless suspension and makes free, small angle oscillations about an axis through the center in a honzontal plane in the earth's magnetic field. The period of oscillation is four seconds. The density of magnetization of steel isa)4.6 Am-1b)4.6 x105Am-1c)4.6 x 10-5 Am-1d)4.6 x 1012 Am-1Correct answer is option 'B'. Can you explain this answer?.
Solutions for A long thin uniformly magnetized needle of hard steel length 12 cm is suspended by a torsionless suspension and makes free, small angle oscillations about an axis through the center in a honzontal plane in the earth's magnetic field. The period of oscillation is four seconds. The density of magnetization of steel isa)4.6 Am-1b)4.6 x105Am-1c)4.6 x 10-5 Am-1d)4.6 x 1012 Am-1Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for GATE. Download more important topics, notes, lectures and mock test series for GATE Exam by signing up for free.
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