Advertisements
Advertisements
प्रश्न
With the help of a diagram explain the following:
Magnetisation of steel needle using electric current such that the pointed end should have north polarity.
Advertisements
उत्तर
The magnetisation of steel needle using electric current: Wind a length of copper wire around a steel needle and connect it to battery and switch. After the current is passed through the copper wire for some time, we will notice that the steel needle got magnetised.
APPEARS IN
संबंधित प्रश्न
“Poles exist in pair”. Comment on this statement ?
Answer the following in detail.
List four methods of magnetizing a magnetic substance.
Answer the following in detail.
How can a magnet be demagnetized?
State the laws of magnetism.
Artificial magnets are made in different shapes such as ______, _____ and _______.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
Consider the statement given below and choose the correct option.
Assertion: Iron filings are concentrated more at the magnetic poles.
Reason: The magnets are so sharp.
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
The pole of a freely suspended magnet that points towards the north is called the south pole and what points towards the south is the celled north pole.
