1 |
When electric current flows through an object it becomes a magnet. Such magnet is called. |
Permanent magnet
Temporary magent
Elecromagent
Non magnet
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2 |
A magnet can lose its magnetc peroperty it is called. |
Magenetism
Demagnetization
Magnetic field
None of these
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3 |
Magnets are of.......... types. |
2
3
4
5
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4 |
The region around a magnet where it can attract magnetic materials is called. |
Magnetic compass
Magneti field
Magnetic lines
Magnetism
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5 |
Glass is an example of |
Non magnetic materials
Magnetic materials
Permanent magnet
Temporary magent
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6 |
The direction of the Qibla is determined by |
Emitter
Armature
Magnetic Compass
Electromagnet
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7 |
The needlcompass is always there |
To the North and south direction
To the West and south direction
To the North and East direction
To the North and West direction
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8 |
In which things of the followign electromagnet does nto pull toward itself. |
Iron
Nickle
Wood
Cobalt
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9 |
How may poles are there on a ring shaped magnet. |
1
2
3
4
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10 |
Which will not increase the strenght of an electromagnet. |
Adding an iron core
Adding a plastic core
Coiling the wire
Increasing the current
|