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प्रश्न
How will you test whether a given rod is a magnet or not ?
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उत्तर
Aim— To test whether a given rod is a magnet or not.
Apparatus —
- rod to be tested
- a bar magnet
- a stand
- a thread
Procedure —
- Suspend the rod to be tested with a thread on the stand.
- Bring the bar magnet near the rod with its north pole towards the rod’s end.
- Observe.
Inference — In every case, the magnet comes to rest in a north- south direction which shows its directive property.
Observation and Inference —
— If the rod is attracted towards the bar magnet, the rod may be magnet or not.
— But if the rod remains in the same direction of rest as in the start of the experiment, it show it is not a magnet.
APPEARS IN
संबंधित प्रश्न
Name four appliances which work using electricity ?
Write true or false of the following statement.
Magnetic poles occur in pairs.
Write true or false of the following statement.
Copper cannot be magnetised.
Fill in the blank.
Magnetic poles always exist in ...............
Define the following term regarding a bar magnet:
Magnetic field
If a bar magnet is hung by a thread tied at its center, its north pole becomes steady in the direction of the ______ Pole of the earth.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Why are E and F placed in contact with the poles of the magnets as shown in the diagram?
Explain the following:
Resistance of a conductor
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.
What are the factors that determine the strength of the magnet?
