Advertisements
Advertisements
प्रश्न
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
Advertisements
उत्तर
When two pins are hung by their heads from the same pole of a magnet, they acquire same polarity. Because like poles repel each other, their pointed ends move apart.
APPEARS IN
संबंधित प्रश्न
Draw a diagram to show the magnetic field lines around a bar magnet.
The strength of the magnetic field between the poles of an electromagnet would be unchanged if ______.
The magnetic field inside a long straight solenoid carrying current ______.
How will you test whether a given rod is made of iron or copper?
[Hint : Iron rod gets magnetised when placed near a bar magnet by magnetic induction, while copper rod does not get magnetised]
State four properties of magnetic field lines.
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
Indicate by crosses, the likely positions of the neutral points.
Select the correct option:
Nickel is a:
State briefly the modern views on magnetism.
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)
