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प्रश्न
Select the correct option:
Nickel is a:
पर्याय
ferromagnetic substance
paramagnetic substance
diamagnetic substance
none of these
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उत्तर
ferromagnetic substance
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संबंधित प्रश्न
The magnetic field lines:
(a) intersect at right angles to one another
(b) interest at an angle 45° to each another
(c) do not cross one another
(d) cross at an angle of 60° to one anotherv
The shape of the earth's magnetic field resembles that of an imaginary:
(a) U-shaped magnet
(b) Straight conductor carrying current
(c) Current-carrying circular coil
(d) Bar magnet
The figure given below shows the magnetic field between two magnets:
Copy the diagram and label theother poles of the magnets.
Which is the weaker magnet?
The magnetic field inside a long straight solenoid carrying current ______.
A current flows downwards in a wire that passes vertically through a table top. Will the magnetic field lines around it go clockwise or anticlockwise when viewed from above the table?
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
Explain the following :
Several soft iron pins can cling, one below the other, from the pole of a magnet.
Define the isoclinic line.
Can two magnetic lines of force intersect? Justify your answer:
A student fixes a white sheet of paper on a drawing board. He places a bar magnet in the centre and sprinkles some iron filings uniformly around the bar magnet. Then he taps gently and observes that iron filings arrange themselves in a certain pattern.
- Why do iron filings arrange themselves in a particular pattern?
- Which physical quantity is indicated by the pattern of field lines around the bar magnet?
- State any two properties of magnetic field lines.
