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When a magnetic compass needle is carried nearby to a straight wire carrying current, then
I. the straight wire cause a noticeable deflection in the compass needle.
II. the alignment of the needle is tangential to an imaginary circle with straight wire as its centre and has a plane perpendicular to the wire
A. (I) is correct
B. (II) is correct
C. both (I) and (II) are correct
D. neither (I) nor (II) is correct

1 Answer

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Best answer
Correct Answer - C
Both points are correct and these are the result of experments done by Danish physicist Hans Christian Oersted in 1820.

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