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Angle of dip is zero at...

Angle of dip is zero at

A

poles

B

between poles of equator.

C

equator

D

none of these

Text Solution

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The correct Answer is:
C
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A long straight horizontal cable carries a current of 3*3A in the direction 10^@ south of west to 10^@ north of east. The magnetic meridian of the plane happens to be 10^@ west of the geographic meridian. The earth's magnetic field at the location is 0*33G and the angle of dip is zero degree. Locate the positions of neutral points?

A long straight horizontal cable carries a current of 2.5amp . In the direction 10^@ south of west to 10^@ north of east, figure. The magnetic meridian of the place happens to be 10^@ west of the geographic meridian. The earth's magnetic field at the location is 0.33G and the angle of dip is zero. Locate the line of neutral points (Ignore the thickness of the cable). [At neutral points, magnetic fied due to a current cable is equal and opposite to the horizontal component of earth's magnetic field.]

We can define two planes for a particular location on the surface of earth. One is called magnetic meridian and the other is called geographic meridian. Magnetic meridian for a point on the surface of earth is defined as a plane passing through this point and containing magnetic axis of earth. Similarly geographic meridian for a point on the surface of earth is defined as plane passing through this point and containing geographic axis of rotation. If we draw these two planes for a point on the surface of earth then in general these are found at some angle. Angle between these two planes is called declination for that place. Importance of magnetic meridian at a point is that net magnetic field vector of earth for that point lies on this plane. Usually net magnetic field of earth is inclined at some angle with the horizontal and this angle is called angle of dip for that place. How many points are there on surface of earth where angle of dip is zero ?

Angle of dip is 90^@ at:

The angle of dip is the angle

At a place of latitude 5^@ , angle of dip is nearly

TARGET PUBLICATION-MAGNETISM-MCQs
  1. Direction of magnetic field at equatorial point

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  2. At magnetic poles of earth, angle of dip is

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  3. Angle of dip is zero at

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  4. At a certain place the horizontal component of the earth's magnetic fi...

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  5. At certain place, the horizontal component of earth's magnetic field i...

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  6. The horizontal component of the earth's magnetic field is 0.22 Gauss a...

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  7. At a certain place, the horizontal component of earth's magnetic field...

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  8. The vertical component of earth's magnetic field at a place is sqrt3 ...

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  9. The angle of dip at a place is 37^(@) and the vertical component of th...

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  10. The Earth's magnetic field at some place on magnetic equator of Earth ...

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  11. If theta1 and theta2 be the apparent angles of dip observed in two ver...

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  12. The material suitable for making electromagnets should have

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  13. Electromagnets are made of soft iron because soft iron has

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  14. Consider a point on an equatorial axis of a short bar magnet. The dire...

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  15. A small bar magnet has a magnetic moment 1.2 A-m^(2). The magnetic fie...

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  16. The bar magnet produces magnetic induction of 4 xx 10^(-5)T at a point...

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  17. The magnetic induction at a point P on the axis is equal to the magnet...

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  18. Two identical short bar magnets, each having magnetic moment of 10Am^(...

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  19. Two short bar magnets of length 1cm each have magnetic moments 1.20 Am...

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  20. The ratio of magnetic fields due to a bar magnet at the two axial poin...

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