If the key in the arrangement as shown below is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are [NCERT Exemplar]
(a) concentric circles
(b) elliptical in shape
(c) straight lines parallel to each other
(d) concentric circles near the point O but of elliptical shapes as we go away from it
Answers
Answered by
8
Answer:
A
Explanation:
BECAUSE ALL THE MAGNETIC FIELD IS ARISE FROM THE CENTRE OF MAGNET.
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Answered by
21
Answer:(c)Straight lines parallel to each other
Explanation:
Since the key is taken out, the current won't flow , and so the magnetic field would not be created . And therefore, the magnetic field lines drawn remain straight and parallel to each other
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