An infinitely long conductor ` PQR` is bent to form a light angle as shown in Figure .
Channel: Doubtnut
Date: 2020-07-12

An infinitely long conductor ` PQR` is bent to form a light angle as shown in Figure . A current `I` flows through `PQR` . The magnetic field due to this current at the point `M` is `H_(1)`. Now , another infinitely long straight conductor `QS` is connected at `Q` so that current is `(I)/(2)` in `QR` as well as in `QS` , the current in `PQ` remaining unchanged . The magnetic field at `M` is now `H_(2)`.  The ratio `(H_(1))/(H_(2)` is given by