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
Answer:C
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