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Two infinitely long, thin, insulated, st...

Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x- and y- axis respectively. Each wire carries a current I, respectively in the positive x-direction and positive y-direction. The magnetic field will be zero at all points on the straight line:

A

`y=x`

B

`y=-x`

C

`y=x-1`

D

`y-x+1`

Text Solution

Verified by Experts

The correct Answer is:
a
`(mu_(0)I)/(2piy)-(mu_(0)I)/(2pix)=0impliesy=x`
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Knowledge Check

  • Same current i is flowing in the three infinitely long wires along positive x-,y- and z-directions. The magnetic filed at a point (0,0,-a) would be

    A
    `(mu_0i)/(2pia)(hatj-hati)`
    B
    `(mu_0i)/(2pia)(hatj+hati)`
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    `(mu_0i)/(2pia)(hati-hatj)`
    D
    `(mu_0i)/(2pia)(hati+hatj+hatk)`

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

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