Two infinitely long parallel wires carry equal current in same direction. The magnetic field at a mid point in between the two wires is

Two parallel wires carrying current I and 2I in same direction have magnetic field B at the midpoint between them. If the current 2I is switched off, the magnetic field at that point will be

Two infinitely long straight parallel wires carry equal currents 'I' in the same direction and are 2 m apart. Magnetic induction at a point which is at same normal distance (sqrt2) m from each wire has magnitude

Two infinitely long straight parallel wires carry equal currents 'I' in the same direction and are 2 m apart. Magnetic induction at a point which is at same normal distance (sqrt2) m from each wire has magnitude