[Solved] A steady current I goes through a wire loop PQR having shape of a right angle triangle with PQ = 3x, PR = 4x and QR = 5x. 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. - - JEE (Advanced) 2009 Paper-2