A pair of stationary and infinitely long bent wires is placed in the `X-Y` plane as shown in figure.The wires carry currents of `10A` each as shown.The segments `L` and `M` are along the `x`-axis.The segments `P` and `Q` are pallel to the `Y`-axis such that `OS=OR=0.02 m`.Find the magnitude and direction of the magnetic induction at the origin `O`.

Answer

A, B, D

Explanation

`B_(due "to" L)=B_(due"to"M)=0`at `0`
`B_(due "to"P)=B_(due "to"Q)=(mu_(0)i)/(4pid)`,both out of paper
`B_(Net)=(mu_(0)i)/(2pid)` ,out of paper
`=10^(-4)wb//m^(2)`