Q54
Three infinitely long wires are placed equally apart on the circumference of a circle of radius a perpendicular to its plane. Two of the wires carry current l each, in the same direction, while the third carries current 2 l along the direction opposite to the other two. The magnitude of the magnetic induction B at a distancer from the centre of the circle for r > a, is
Three infinitely long wires are placed equally apart on the circumference of a circle of radius a perpendicular to its plane. Two of the wires carry current each, in the same direction, while the third carries current 2 along the direction opposite to the other two. The magnitude of the magnetic induction at a distancer from the centre of the circle for r > a, is
A.
zero
AnswerB.
C.
D.
Answer: Option A
Solution
Answer: Option A
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