Figure shows a cube made from twelve uniform wires. Find the magnetic field at the centre of the cube, if a battery is connected between the points A and H.

Figure shows a square loop made from a uniform wire. Find the magnetic field at the centre of the square if a battery is connected between the points A and C.

Figure shows a square loop made from a uniform wire. Find the magnetic field at the centre of the square if a battary is connected between points A and C.

Figure shows a square loop made from a uniform wire. If a battery is connected between the pionts A and C. What will be the magnetic field at the centre O of the square?

A positive charge q is placed in front of a conducting solid cube at a distance d from its centre. Find the elcetric field at the centre of the cube due to the charges appearing on its surgace.

A positive charge q is placed in front of cinducting solid cube at a distance d from its centre. Find the electric field at the centre of the cube due to the charges appearing on its surface.

Find magnetic field at point P shown in Fig. point P is on the bisector of angle between the wires.

A cube made of wire of equal length is connected to a battery as shown in figure.The magnetic field at the centre of the cube is

The wire ABC shown in figure forms an equilateral triangle. Find the magnetic field B at the centre O of the triangle assuming the wire to be uniform.

The figure shows a wire frame in xy-plane carryigna current I . The magnetic field at the point O is