The resistance of wire `ABC` is double of resistance of wire `ADC`. The magnetic field at `O` is

Figure shows a square loop ABCD with edge length a. The resistance of the wire ABC is r and that of ADC is 2r. Find the magnetic field B at the centre of the loop assuming uniform wires.

Figure shows a square loop ABCD with edge length a. The resistance of the wire ABC is r and that of ADC is 2r. Find the magnetic field B at the centre of the loop assuming uniform wires.

Figure shows a square loop ABCD with edge length a. The resistance of the wire ABC is r and that of ADC is 2r. Find the magnetic field B at the centre of the loop assuming uniform wires.

Figure shows a square loop ABCD with edge length a . The resistance of the wire ABC is r and that of ADC is 2r . Find the magnetic field B at the centre of the loop assuming uniform wires.

When the diameter of a wire is doubled, its resistance becomes:

If a resistive wire is elongated, its resistance?

The resistance of a conducting wire is R. Resistance of wire of twice the Iength and twice the diameter is