Interstellar space has an extremely weak magnetic field of the order of `10^(-12)T.` Can such a weak fleld be of any significant consequence? Explain.

A magnetic dipole of magnetic moment 6 xx 10^(-2)A m^(2) and moment of inertia 12 xx 10^(-6) kg m^(2) performs oscillations in a magnetic field of 2 xx 10^(-2)T . The time taken by the dipole to complete 20 oscillations is ( pi = 3 )

Write the relation between the magnitude of electric and magnetic fields in an electromagnetic wave with speed of light and hence find the magnitude of the electric field at a point in space and time if the magnetic field at that place is 2 xx 10^(-8) T .

A square loop of 10 turns has each side 10 cm. It rotates in a magnetic field of 0.25 T and the maximum induced emf is 20 mV the angular speed of rotation is