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Same current i is flowing in the three i...

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)/(2pi a) (hatj - hati)`

B

`(mu_0i)/(2pi a) (hati - hatj)`

C

`(mu_0 i)/(2pi a) (hati - hatj)`

D

`(mu_0i)/(2pi a) (hati - hatj + hatk)`

Text Solution

Verified by Experts

The correct Answer is:
A
Magnetic field due to current along the z - axis is 0 and due to rest two wires is `(mu_0)/(2pi) i/a `
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NARAYNA-MOVING CHARGES AND MAGNETISM-EXERCISE - 2(C.W) (AMPERE.S CIRCUITAL LAW BIO-SAVART LAW AND ITS APPLICATIONS)
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  15. Magnetic field induction at the center of a circular coil of radius 5c...

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