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प्रश्न
The intensity of a magnetic field is indicated by the lines of ______.
उत्तर
The intensity of a magnetic field is indicated by the lines of magnetic force passing perpendicularly through a unit area.
संबंधित प्रश्न
A magnetic field exerts no force on:
an electrical charge moving perpendicular to its direction
an unmagnetised iron bar
a stationary electric charge
a magnet
The wire in Figure below is being moved downwards through the magnetic field so as to produce induced current.
(a) moving the wire at a higher speed?
(b) moving the wire upwards rather than downwards?
(c) using a stronger magnet?
(d) holding the wire still in the magnetic field?
(e) moving the wire parallel to the magnetic field lines?
What is a natural magnet? State two limitations of a natural magnet.
Select the correct option:
A bar magnet is rubbed on a bar of steel along its length 20 times. The bar of steel gets magnetised due to the process of:
Draw diagram showing the arrangement of the lines of force for a piece of soft iron laid in line with the magnetic field.
Inside the magnet, the field lines moves ____________.
The magnetic field lines always begin from ____________.
Can two magnetic lines of force intersect? Justify your answer:
A closely wounded circular coil of radius 5 cm produces a magnetic field of 37.68 × 10-4 T at its center. The current through the coil is ______ A. [Given, number of turns in the coil is 100 and π = 3.14)
