Two long parallel conductors carry currents `i` and `2I` in the same direction. The magnetic induction at a point exactly mid way between them is `B`. If the current in the first conductor is reversed in direction, the magnetic induction at the same point will be

Two long straight parallel conductors 10 cm apart, carry currents of 5A each in the same direction. Then the magnetic induction at a point midway between them is

Two long straight parallel conductors 10 cm apart, carry equal currents of magnitude 3A in the same direction. Then the magnetic induction at a point midway between then is

Two infinitely long parallel conductors carrying currents are directed at right angles to the plane of the drawing. The maximum of magnetic induction is at a point M that lies in the middle between the conductors. The direction of the magnetic induction vector B at this point coincides with the positive direction on the x axis. Determine the direction of the currents flowing in the conductors and the relationship that exists between these currents.

Two long straight parallel conductors 10cm apart ,carry current of 5A each in opposite direction .Then the magnetic induction at a point mid way between them is x times10^(-5) T. What is the value of 'x'?

Two infinitely long parallel cond uctors carrying currents are directed at right angles to the plane of the drawing. The magnetic induction at a point M that lies in the middle between the conductors is zero. To the right of this point, the magnetic induction vector points upward, at right angles to the x axis. Find the direction of the currents flowing in the conductors, the direction of the magnetic induction vector to the left of point M, the relationship between the currents, and the point on the x axis at which the magnetic induction is maximal. The distance between the conductors is a.

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