You are given a bar magnet, but the poles are not labeled. Using which of the following items can you determine which end is a north pole and which is a south pole?

A. a compass
B. a voltmeter
C. a bottle of iron particles
D. a charged rubber rod
E. a steel rod



Answer :

Final answer:

To identify the poles of an unlabeled bar magnet, use a compass and observe how the needle aligns.


Explanation:

To determine the north and south poles of an unlabeled bar magnet, you can use a compass. When a compass is brought close to the magnet, the needle of the compass will align in a specific manner, indicating the magnetic orientation of the bar magnet. The end that attracts the north-seeking pole of the compass is the north pole of the bar magnet.


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