मराठी

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 Componentof Earth’S Magnetic Field and - Physics

Advertisements
Advertisements

प्रश्न

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?

Advertisements

उत्तर

(a) The horizontal component of earth’s magnetic field is 0°.

(b) The angle of dip is 0°.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2011-2012 (March) Foreign Set 1

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

Name the electromagnetic waves which (i) maintain the Earth’s warmth and (ii) are used in aircraft navigation.


Solve the following problem.

A magnet makes an angle of 45° with the horizontal in a plane making an angle of 30° with the magnetic meridian. Find the true value of the dip angle at the place.


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’s magnetic field varies from point to point in space. Does it also change with time? If so, on what time scale does it change appreciably?


The charged currents in the outer conducting regions of the earth’s core are thought to be responsible for earth’s magnetism. What might be the ‘battery’ (i.e., the source of energy) to sustain these currents?


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?


Interstellar space has an extremely weak magnetic field of the order of 10–12 T. Can such a weak field be of any significant consequence? Explain.


At a certain location in Africa, a compass points 12° west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points 60° above the horizontal. The horizontal component of the earth’s field is measured to be 0.16 G. Specify the direction and magnitude of the earth’s field at the location.


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.


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×