Four long, parallel conductors carry equal currents of `5.0`. The direction of the currents is into the pge at points. `A` and `B` and out of the page at `C` and `D`. Calculate the magnitude and directionof the mgnetic field at point `P`, located at the centre of the square.

Explanation

`B_("net") =4B cos 45^@=4/sqrt2 (mu_0I)/(2pir)=4/sqrt2 (mu_0)/(2pi) 5/(sqrt2xx0.1)`
` implies B_("net")=2xx10^-5T(-hatj)`