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प्रश्न
A compass is used for ______.
विकल्प
plotting magnetic lines
detection of magnetic field
navigation
All of these
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उत्तर
All of these
APPEARS IN
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 unit of magnetic flux density is ______.
By which instrument, the presence of a magnetic field be determined?
Write a note on:
Compass needle
A magnetic field is a ______ quantity.
No force acts in a current-carrying conductor when it is ______ to the 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°.
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.
