Two long wires carrying same currents in opposite directions are placed at separation D as shown.Predict variation of magnetic field as one moves from the point O and A

Figure shows two long, straight wires carrying electric currents in opposite directions. The separation between the wires is 5.0 cm. Find the magnetic field at a point P midway between the wires.

Two long parallel wires carry currents in opposite direction as shown. Points A and D lie in the same plane as the wires. The magnetic field at A and D is into the plane of the paper, with intensity B_(A) and B_(D) respectively. If (B_(A))/(B_(D))=7/5 , the value of (I_(1))/(I_(2)) is ____________________.

Two infinitely long wires each carrying current I along the same direction are made into the geometry as shown in the figure. The magnetic field at the point P is

Two long wires each carrying a d.c. current in the same direction are placed close to each other. Which one of the following statements is correct?

Four long wires each carrying current I as shown in the figure are placed at the points A, B, C and D. Find the magnitude and direction of magnetic field at the centre of the square.