The magnetic field at the centre of dotted circle in the arrangement shown is

Determine the magnetic field at the centre of the current carrying wire arrangement shown in Fig. The arrangement extends to infinity. (The wires joining the successive squares are along the line passing through the centre).

Determine the magnetic field at the centre of the current carrying wire arrangement shown in Fig. The arrangement extends to infinity. (The wires joining the successive squares are along the line passing through the centre).

Determine the magnetic field at the centre of the current carrying wire arrangement shown in Fig. The arrangement extends to infinity. (The wires joining the successive squares are along the line passing through the centre).

The magnetic field at the centre of circular loop in the circuit shown below is

The magnetic field at the centre of circular loop in the circuit shown below is

The magnetic field at the centre of square of side a is

The magnetic field at the centre of square of side a is

The magnetic field at the centre O of the are shown in the figure is