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प्रश्न
Give detailed information about how the merchants of olden times used a magnet while travelling.
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उत्तर
In the past, it was known that a piece of magnetite (stones having magnetic properties), when hung freely, points in the north-south direction. Thus, these stones were used by merchants of olden times to find direction while travelling through unknown regions. These stones are also called loadstones (leading stones).
संबंधित प्रश्न
List three sources of magnetic fields.
Which of the following is not attracted by a magnet:
A magnet attracts:
The metallic pointer of a plotting compass gets deflected only when it is placed near a bar magnet because the pointer has:
Define current. Give its S.I. unit.
The unit of magnetic flux density is ______.
Convert 1 tesla into gauss.
A magnetic field is a ______ quantity.
The magnetic field lines due to a straight wire carrying current are parallel.
A wire placed along north south direction carries a current of 5A from south to north. Find the magnetic field due to a 1m piece of wire at a point 200 cm north east from the piece.
