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प्रश्न
Define the Isogonic line.
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उत्तर
A line that joins all the places on earth, having the same angle of declination is called an isogonic line.
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संबंधित प्रश्न
State whether the following statement is true of false:
The axis of earth's imaginary magnet and the geographical axis coincide with each other.
The shape of the earth's magnetic field resembles that of an imaginary:
(a) U-shaped magnet
(b) Straight conductor carrying current
(c) Current-carrying circular coil
(d) Bar magnet
A thick wire is hanging form a wooden table. An anticlockwise magnetic field is to be produced around the wire by passing current through this wire by using a battery. Which terminal of the battery should be connected to the:
(a) top end of wire?
(b) bottom end of wire?
Give reason for your choice.
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
Sketch four magnetic field lines as obtained in a limited space on a horizontal plane in the earth's magnetic field alone.
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
Indicate by crosses, the likely positions of the neutral points.
Complete the following diagram of magnets to show the lines of force.
The direction of the magnetic lines around a current-carrying conductor can be easily understood using the ______ rule.
Can two magnetic lines of force intersect? Justify your answer:
