which device is used to determine the presence and direction of magnetic field
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Explanation:
compass is an instrument which is used to find the direction of a magnetic field. A compass consists of a small metal needle which is magnetised itself and which is free to turn in any direction. Therefore, when in the presence of a magnetic field, the needle is able to line up in the same direction as the field.
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here's your answer..
Explanation:
A compass is an instrument which is used to find the direction of a magnetic field.
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