Two small and similar bar magnets have magnetic dipole moment of 1.0 `A-m^2` each. They are kept in a plane in such a way that their axes are perpendicular to each other. A line drawn through the axis of one magnet passes through the centre. If the distance between their centres is 2m. Find the magnitude of magnetic field at the mid point of the line joining their centres.

Two identical short bar magnets, each having magnetic moment of 10Am^(2) , are arranged such that their axial lines are perpendicular to each other and their centres be along the same straigh line in a horizonetal plane. If the distance between their centres is 0.2m , the resultant magnetic induction at a point midway between them is (mu_(0)=4pixx10^(-7)Hm^(-1))

Two identical magnetic dipoles of magnetic moments 1*0Am^2 each are placed at a separation of 2m with their axes perpendicular to each other. What is the resultant magnetic field at a point midway between the dipoles?

Two short bar magnets of length 1cm each have magnetic moments 1.20 Am^(2) and 1.00 Am^(2) respectively. They are placed on a horizontal table parallel to each other with their N poles pointing towards the south. They have a common magnetic equator and are separted by a distance of 20.0 cm . The value of the resultant horizontal magnetic induction at the mid - point O of the line joining their centres is close to (Horizontal component of earths magnetic induction is 3.6 xx 10.5 Wh//m^(2)

Consider a closely wound 1000 turn coil having a radius of lm. If a current of 10A basses through the coil, what will be the magnitude of the magnetic field at the centre?

Two heavy spheres of mass m are kept separated by a distance 2r. The gravitational field and potential at the midpoint of the line joining the centres of the spheres are

A small bar magnet has a magnetic moment 1.2 A-m^(2) . The magnetic field at a distance 0.1 m on its axis will be: (mu_(0)=4pixx10^(-7)T-m//A)

Two identical coils carry equal currents have a common centre and their planes are at right angles to each other. The ratio of the magnitude of the resulatant magnetic field at the centre and the field due to one coil is

Two particles of masses m_1 and m_2 are separated by a distance 'd'. Then moment of inertia of the system about an axis passing through centre of mass and perpendicular to the line joining them is