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A long straight wire along the z-axis ca...

A long straight wire along the z-axis carries a current I in the negative z direction. The magnetic vector field `vecB` at a point having coordinates (x,y) in the z = 0 plane is -

A

`(mu_(0) I)/(2 pi) ((y hat(i) - x hat(i)))/((2 pi (x^(2) + y^(2)))`

B

`(mu_(0) I)/(2 pi) ((x hat(i) + y hat(i)))/((2 pi (x^(2) + y^(2)))`

C

`(mu_(0) I)/(2 pi) ((x hat(i) - y hat(i)))/((x^(2) + y^(2)))`

D

`(mu_(0) I)/(2 pi) ((x hat(i) 0 y hat(i)))/((x^(2) + y^(2)))`

Text Solution

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The correct Answer is:
A
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