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प्रश्न
The metallic pointer of a plotting compass gets deflected only when it is placed near a bar magnet because the pointer has:
पर्याय
electromagnetism
permanent magnetism
induced magnetism
ferromagnetism
उत्तर
permanent magnetism
The needle of a compass is made of permanent magnetic materials.
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संबंधित प्रश्न
Draw magnetic field lines around a bar magnet.
A magnet attracts:
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 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.
Fill in the blank.
Like poles ..................... each other.
The unit of magnetic flux density is ______.
By which instrument, the presence of a magnetic field be determined?
No force acts in a current-carrying conductor when it is ______ to the magnetic field.
Assertion (A): The work done by a magnetic field on a moving charge is zero.
Reason (R): In a magnetic field force is perpendicular to the velocity.
Define magnetic shielding.
