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A magnetic dipole of magnetic moment 1.4...

A magnetic dipole of magnetic moment `1.44 A m^2` is placed horizontally with the north pole pointing towards north. Find the positon of the neutral point if the horizontal component of the earth's magnetic field is `18 muT`.

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To find the position of the neutral point due to a magnetic dipole, we can follow these steps: ### Step 1: Understand the Problem We have a magnetic dipole with a magnetic moment \( m = 1.44 \, \text{A m}^2 \) placed horizontally. The north pole is pointing towards the geographic north. We need to find the position of the neutral point where the magnetic field due to the dipole cancels out the horizontal component of the Earth's magnetic field, which is given as \( B_H = 18 \, \mu T = 18 \times 10^{-6} \, T \). ### Step 2: Use the Formula for the Magnetic Field of a Dipole The magnetic field \( B \) at a distance \( d \) from a magnetic dipole is given by the formula: \[ ...
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HC VERMA ENGLISH-PERMANENT MAGNETS-Exercise
  1. Show that the magnetic field at a point due to a magnetic dipole is pe...

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  2. A short bar magnet has a magnetic moment of 0.48JT^(-1). Give the dire...

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  3. A magnetic dipole of magnetic moment 1.44 A m^2 is placed horizontally...

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  4. A magnetic dipole of magnetic moment 0.72 Am^2 is planced horizontally...

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  5. A magnetic dipole of magnetic moment 0.72 Am^2 is planced horizontally...

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  6. The magnetic moment of the assumed dipole at the earth's centre is 8.0...

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  7. If the earth's magnetic field has a magnitude 3.4 xx 10^(-5) T at the ...

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  8. The magnetic field due to the earth has a horizontal component of 26 m...

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  9. A magnetic needle is free to rotate in a vertical plance which makes a...

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  10. The needle of a dip circle shows an apparent dip of 45^@ in a particul...

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  11. A tangent galvanometer shown a deflection of 45^@ when 10 mA of curren...

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  12. A moving coil galvanometer has a 50-turn coil of size 2cm xx 2cm. It i...

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  13. A short magnet produces a deflection of 37^@ in a deflection magnetome...

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  14. The magnetometer of the previous problem is used with the same magent ...

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  15. A deflection megnetometer is placed with its arms in north-south direc...

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  16. A bar magnet takes pi/10 second to complete one oscillation in an osci...

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  17. The combination of two bar magnets makes 10 oscillations per second in...

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  18. A short magnet oscillates in a vibration magnetometer with a time per...

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  19. A bar magnet makes 40 oscillations per minute in an oscillation magnet...

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  20. A short magnet makes 40 oscillations per minute when used in an oscill...

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