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प्रश्न
A magnetic field can pass through ______ and ______.
उत्तर
A magnetic field can pass through cardboard and bottle.
संबंधित प्रश्न
Draw magnetic field lines around a bar magnet.
The metallic pointer of a plotting compass gets deflected only when it is placed near a bar magnet because the pointer has:
The diagram shows a bar magnet surrounded by four plotting compasses. Copy the diagram and mark in it the direction of he compass needle for each of the cases B, C, and D.
Which is the north pole, X or Y?
The unit of magnetic flux density is ______.
By which instrument, the presence of a magnetic field be determined?
The magnetic field at a point is ______ to the magnetic field lines.
A current flowing in a wire gives rise to a magnetic field.
The magnetic field lines due to a straight wire carrying current are parallel.
The force on a charged particle moving in a magnetic field is maximum when the angle between the direction of motion and field is 90°.
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.
