English

What happens to the angle of dip as we move towards magnetic pole from magnetic equator? - Physics

Advertisements
Advertisements

Question

What happens to the angle of dip as we move towards magnetic pole from magnetic equator?

One Line Answer
Advertisements

Solution

At the magnetic pole value of Φ = 90° and it goes on decreasing when we move towards equator such that at equator value of Φ = 0°.

shaalaa.com
  Is there an error in this question or solution?
Chapter 12: Magnetism - Exercises [Page 228]

APPEARS IN

Balbharati Physics [English] Standard 11 Maharashtra State Board
Chapter 12 Magnetism
Exercises | Q 3. (iii) | Page 228

Video TutorialsVIEW ALL [2]

RELATED QUESTIONS

The horizontal component of the earth’s magnetic field at a place is B and angle of dip is 60°. What is the value of vertical component of earth’s magnetic field at equator?


A magnetic needle, free to rotate in a vertical plane, orients itself vertically at a certain place on the Earth. What are the values of (i) Horizontal component of Earth’s magnetic field and (ii) angle of dip at this place?


What is the angle of dip at a place where the horizontal and vertical components of the Earth’s magnetic field are equal?


Where on the surface of Earth is the angle of dip zero?


A horizontal straight wire of length L extending from east to west is falling with speed v at right angles to the horizontal component of Earth’s magnetic field B. 

(i) Write the expression for the instantaneous value of the e.m.f. induced in the wire. 

(ii) What is the direction of the e.m.f.?

(iii) Which end of the wire is at the higher potential?


Can the earth's magnetic field be vertical at a place? What will happen to a freely suspended magnet at such a place? What is the value of dip here?


Choose the correct option.

The horizontal and vertical component of magnetic field of Earth are same at someplace on the surface of Earth. The magnetic dip angle at this place will be


Answer the following question in detail.

How does the magnetic declination vary with latitude? Where is it minimum?


Answer the following question in detail.

Define the Angle of Dip.


Answer the following question regarding earth’s magnetism:

The angle of dip at a location in southern India is about 18°. Would you expect a greater or smaller dip angle in Britain?


The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth’s field in such distant past?


A short bar magnet placed in a horizontal plane has its axis aligned along the magnetic north-south direction. Null points are found on the axis of the magnet at 14 cm from the centre of the magnet. The earth’s magnetic field at the place is 0.36 G and the angle of dip is zero. What is the total magnetic field on the normal bisector of the magnet at the same distance as the null point (i.e., 14 cm) from the centre of the magnet? (At null points, field due to a magnet is equal and opposite to the horizontal component of earth’s magnetic field.)


A compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12 cm. The coil is in a vertical plane making an angle of 45° with the magnetic meridian. When the current in the coil is 0.35 A, the needle points west to east.

(a) Determine the horizontal component of the earth’s magnetic field at the location.

(b) The current in the coil is reversed, and the coil is rotated about its vertical axis by an angle of 90° in the anticlockwise sense looking from above. Predict the direction of the needle. Take the magnetic declination at the places to be zero.


If the inclination is θ, the horizontal component of the earth’s field is HE and the vertical component of the earth’s field is ZE, then tan(θ) is ______.


The earth’s magnetic field always has a vertical component except at the ______.

At magnetic poles, the angle of dip is ______.

At the magnetic north pole of the earth, the value of the horizontal component of earth’s magnetic field and angle of dip are respectively.

Which of the following is responsible for the earth’s magnetic field?


The angle of dip at a certain place where the horizontal and vertical components of the earth’s magnetic field are equal is ______.


The vertical component of earth’s magnetic field at a place is √3 times the horizontal component the value of angle of dip at this place is ______.


The horizontal component of earth’s magnetic field at a place is `sqrt3` times the vertical component. The angle of dip at that place is ______.


Assertion(A): A magnetic needle free to rotate in a vertical plane, orients itself (with its axis) vertical at the poles of the earth.

Reason (R): At the poles of the earth the horizontal component of earth’s magnetic field will be zero.

Select the most appropriate answer from the options given below:


If the change in value of g at height h above the surface of the earth is the same as at a depth d below the surface of the earth, when both d and h are much smaller than the radius of the Earth, then which one of the following is true?


At a certain place horizontal component is `sqrt(3^2)` time the vertical component. The angle of dip at this place.


Isogonic lines are those for which ______.


Let the magnetic field on earth be modelled by that of a point magnetic dipole at the centre of earth. The angle of dip at a point on the geographical equator ______.

  1. is always zero.
  2. can be zero at specific points.
  3. can be positive or negative.
  4. is bounded.

Consider the plane S formed by the dipole axis and the axis of earth. Let P be point on the magnetic equator and in S. Let Q be the point of intersection of the geographical and magnetic equators. Obtain the declination and dip angles at P and Q.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×