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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) and (ii) is correct
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
When a magnetic compass needle is carried nearby to a straight wire ca...
Both points are correct and these are the result of experiments done by Danish physicist Hans Christian Oersted in 1820.
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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 wirea)I is correctb)II is correctc)both (i) and (ii) are correctd)neither (i) and (ii) is correctCorrect answer is option 'C'. Can you explain this answer?
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