A long straight wire lies on y-axis and carries a current of 8 A in - y direction. In addition to the magnetic field produced by the wire, a uniform magnetic field of `1.4xx10^(-6)T hat(i)` is also present. What is the magnitude of net magnetic field at (1,1,1) Express your answer in `axx10^(-7)T` and fill a in OMR sheet.

Answer

`10`

Explanation

`B=(4pixx10^(-7))/(2pi)xx8/sqrt(2)[1/sqrt(2)-hat(i)+1/sqrt(2)hat(k)]+1.4xx10^(-6)hat(i)`
`=(-8hat(i)+hat(k)+14hat(i))xx10^(-7)`
`=(6hat(i)+8hat(k))xx10^(-7)`
`B=10xx10^(-7)T`
Ans 10