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An infinetely long conductor PQR is bent...

An infinetely long conductor `PQR` is bent to from a right angle as shown. 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 the 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_(z)`, the ratio `H_(1)//H_(2)` is given by

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An infinetely long conductor PQR is bent tor form a right angle as shown in Fig. A current I flows through PQR. The magnetic field due to this current carrying conductor at the point M is B_1 . Now, another infinitely long straight conductor QS, is connected at Q so that the current is 1/2I in QR as well as in QS, is the current in PQ remaininig unchanged. The magnetic field at M is now B_2 . The ratio B_1//B_2 is given by