Moving Charges and Magnetism - Result Question 49
50. Two equal electric currents are flowing perpendicular to each other as shown in the figure. $A B$ and $C D$ are perpendicular to each other and symmetrically placed with respect to the current flow. Where do we expect the resultant magnetic field to be zero?
[1996]
(a) on $A B$
(b) on $C D$
(c) on both $A B$ and $C D$
(d) on both $O D$ and $B O$
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Answer:
Correct Answer: 50. (a)
Solution:
- (a)
Net magnetic field on $A B$ is zero because magnetic field due to both current carrying wires is equal in magnitude but opposite in direction.
