An infinitely long conductor PQR is bent to form a right angle as shown. A current I flows through PQR The magnetic field due to this current at the point M is H1. 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 \[{{H}_{2.}}\]The ratio \[{{H}_{1}}/{{H}_{2}}\] is given by [IIT-JEE (Screening) 2000]

An infinitely long conductor PQR is bent to form a right angle as show

1.	An infinitely long conductor PQR is bent to form a right angle as shown. A current I flows through PQR The magnetic field due to this current at the point M is H1. 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 \[{{H}_{2.}}\]The ratio \[{{H}_{1}}/{{H}_{2}}\] is given by [IIT-JEE (Screening) 2000]
A.	\[\frac{1}{2}\]
B.	1
C.	Magnetic line
D.	2
Answer» D. 2

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