Advertisements
Advertisements
प्रश्न
How are the magnets kept safely? What is the role of keepers in storing the magnets?
Advertisements
उत्तर
When magnets are not in use they should be kept and stored in magnetic keepers. The magnetic keeper is a piece of soft iron. A magnetic keeper has cardboard with one or two iron soft pieces. Two magnets are placed in such a way that their opposite poles are close to each other and then a soft iron keeper is attached to it.
APPEARS IN
संबंधित प्रश्न
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
Which magnet will you use?
A window shutter opens and shuts continuously in the wind.
Fill the blank spaces in the table given below:
| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
Define the term Effective length of a magnet
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.
What will happen when we place magnets near cell phones, computers, and DVDs?
Observe the pictures A and B given in figure carefully.

Which of the following statement is correct for the above given pictures?
What is the connection between electricity and magnetism?
Define electromagnet.
