A closed circuit is in the form of a regular hexagon of side r. If the circuit carries current I, what is the magnetic field induction at the centre of the hexagon?

A wire shaped to a regular hexagon of side 2 cm carries a current of 2A . Find the magnetic field at the cetre of the hexagon.

What is the area (in cm^2 ) of a regular hexagon of side 10 cm?

What is the area (in sq cm) of a regular hexagon of side 14 cm?

A square loop of side a carris a current I . The magnetic field at the centre of the loop is

The circular loop PQRSTP formed by two circular segments of radii R_1 and R_2 , carries a current I . What is the magnetic field induction at the centre O? What will be the magnetic field induction at O if alpha=90^@ ?

Five point charge ( +q each) are placed at the five vertices of a regular hexagon of side 2a .what is the magnitude of the net electric field at the centre of the hexazon?

Five identical point charges +Q are placed at the five corners of a regular hexagon of edge length a. One corner is empty. Electric field intensity at the centre of the hexagon is