Magnetic field lines represent the direction and strength of the magnetic field. They show how the magnetic force acts around a magnet.
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Yes, magnets can lose their magnetism due to factors like high temperatures, physical shocks, or strong opposing magnetic fields.
Magnetic declination is the angle between magnetic north (indicated by a compass) and true north (geographic north).
To make an electromagnet, wrap a coil of insulated wire around a nail and pass an electric current through the wire.
A compass needle aligns with the Earth’s magnetic field, pointing towards the magnetic north. This helps in determining directions.