Find the truth table for the function Y of A and B represented in the following figure.

Figure A and B shown to long straight wires of circular cross-section (a and b with a < b), carrying current I which is uniformly distributed across the cross-section. The magnitude of magnetic field B varies with radius r and can be represented as :

Two identical particles of mass 1 kg each go round a circle of radius R, under the action of their mutual gravitational attraction. The angular speed of each particle is :

What will be the magnitude of electric field at point O as shown in the figure? Each side of the figure is l and perpendicular to each other?