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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.
The three diagrams in the following figure show the lines of force (field lines) between the poles of two magnets. Identify the poles A, B, C, D, E and F.
The change in magnetic field lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.
A magnetic field can pass through ______ and ______.
Define magnetic field.
The unit of magnetic flux density is ______.
State Fleming’s Left Hand Rule.
A current flowing in a wire gives rise to a magnetic field.
The magnetic field is a quantity that has magnitude only.
Magnetic fields do not interact with electric charges in motion.
