Two parallel wires carrying equal currents in opposite directions are placed at x=+a, x=-a parallel to y axis with z=0. If `B_0` be the field at the origin and B be the field at point P(2a,0,0), then B=`B_0/x`, find the value of 'x'.

Two parallel wire carrying equal currents in opposite directions are placed at x=+-a parralel to y-axis with z=0 . Magnetic field at origin O is B_1 and at P(2a,0,0) is B_2 . Then, the ratio B_1//B_2 is

Two long parallel wires, AB and CD, carry equal currents in opposite directions. They lie in the x-y plane, parallel to the x-axis, and pass through the points (0,-a,0) and (0,a,0) respectively, Figure. The resultant magnetic field is:

Two parallel wires carry equal currents of 10A along the same direction and are separated by a distance of 2.0 cm. Find the magnetic field at a point which is 2.0 cm away from each of these wires.

Two long thein, parallel conductors carrying equal current in the same direction are fixed parallel to the x-axis one passing throught magnetic field due to the two conductors at any point is B Which of the following are correct ?

In fig. two long parallel wires carry equal currents in opposite directions. Point O is situated midway between the wires and X-Y plane contains the two wires and the position Z -axis comes normally out of the plane of paper. The magnetic field B at O is non-zero along

Let two long parallel wires, a distance d apart, carry equal currents I in the same direction. One wires at x=0 , the other at x=d (as shown in Fig) Determine magnetic field at any point x-axis between the wires as a function of x.

Two long parallel wires carry equal current I flowing in the same direction are at a distance 2d apart. The magnetic field B at a point lying on the perpendicular line joining the wires and at a distance x from the midpoint is

Two long wires a and b, carrying equal currents of 10*0A, are placed parallel to each other with a separation of 4*00 cm between them as shown in figure. Find the magnetic field B at each of the points P,Q and R.

Four long, parallel conductors carry equal currents of 5.0A. The direction of the currents is into the page at point A and B and out of the page at C and D. Calculate the magnetic and direction of the magnetic field at point P, located at the centre of the square.