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Q.15) Describe in brief, the construction of a compass needle, State its main use,3​

Answer»

Answer. A magnetic rod is required when constructing a compass. ... For example, a magnetised rod can be CREATED by repeatedly rubbing an iron rod with a magnetic lodestone. This magnetised rod (or magnetic needle) is then placed on a LOW friction SURFACE to allow it to FREELY pivot to align itself with the magnetic field.please fallow me



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