A steady current \( I \) goes through a wire loop \( P Q R \) having shape of right angle triang....

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A steady current \( I \) goes through a wire loop \( P Q R \) having shape of right angle triangle with \( P Q=3 x \),
P
\( P R=4 x \) and \( Q R=5 x \). If the magnitude of the magnetic field at \( P \) due to this loop is \( k\left(\frac{\mu_{0} I}{48 \pi x}\right) \). Find the value of \( k \).
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