describe in brief the construction of a compass needle. state the main use
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Answer:
Actually the needle of the compass is magnetic so the north pole of it which is in white in colour attracts towards south and its south pole which is in red in colour is attracted towards north. everthing is based on this ,that means opposite poles attract and similar poles repel.
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a magnet rod is required when constructing a compass .this can be created by aligning an iron or steel rod with Earth's magnetic field and then tempering or striking it . however, this method produces only of weak magnets or other methods are preferred .for example , a magnetized rod can be created by repeatedly rubbing and iron rod with a magnetic lodestone .dress magnetic rod is then placed on a low friction surface to allow it to freely .
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