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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Three infinitely long thin wires, each carrying current i in the same direction, are in the x−y plane of a gravity free space . The central wire is along the y−axis while the other two are along x=±d. (i) Find the locus of the points for which the magnetic field B is zero. (ii) If the central wire is displaced along the Z−direction by a small amount and released,

Three infinitely long thin wires, each carrying current i in the same direction, are in the x−y plane of a gravity free space . The central wire is along the y−axis while the other two are along x=±d. (i) Find the locus of the points for which the magnetic field B is zero. (ii) If the central wire is displaced along the Z−direction by a small amount and released,

A long horizontal wire AB as shown in figure. Shown that when AB is slightly depressed each carrying current i in the same direction is in equilibrium at a height of 0.01m over another parallel long wire CD which is fixed in a horizontal plane and carries a steady current of 30A it executes simple harmonic motion. Find the period of oscillations. Three infinitely long thin wires which is free to move in a vertical plane and carries a steady current of 20A