The hystersis curve is studied generally for? Mark as favorite Copy Link diamagnetic materials paramagnetic materials ferromagnetic materials all of the above Check Answer
Demagnetisation of magnets can be done by? Mark as favorite Copy Link heating magnetising in the opposite direction rough handling All of the above Check Answer
At a point on the right bisector of a magnetic dipole, the magnetic? Mark as favorite Copy Link field varies as r^3. potential varies as 1/r² potential is zero at all points on the right bisector. field is perpendicular to the axis of dipole. Check Answer
The magnetic susceptibility of an ideal diamagnetic substance is? Mark as favorite Copy Link +1 infinity -1 Check Answer
The best material for the ore of a transformer is? Mark as favorite Copy Link hard steel mild steel soft iron stainless steel Check Answer
Which of the following is not showing the essential difference between electrostatic shielding by a conducting shell and magneto static shielding? Mark as favorite Copy Link Magnetic field lines can end but conductors cannot end them. Electrostatic field lines can end on charges and conductors have free charges. Shells of high permeability materials can be used to divert lines of magnetic field from the interior region. Lines of magnetic field cannot end on any material and perfect shielding is not possible. Check Answer
The vertical component of earth’s magnetic field . at a place is?3 times the horizontal component the value of angle of dip at this place is? Mark as favorite Copy Link 30° 45° 60° 90° Check Answer
A diamagnetic material in a magnetic field moves? Mark as favorite Copy Link in random direction. from weaker to stronger parts. perpendicular to the field. from stronger to weaker parts. Check Answer
Current I is flowing in a coil of area A and number of turns is N, then magnetic moment of the coil in M equal to? Mark as favorite Copy Link NI/A NIA NI/ A N^2 AI Check Answer
A magnet can be completely demagnetised by? Mark as favorite Copy Link dropping it into ice cold water. a reverse field of appropriate strength. heating it slightly. breaking the magnet into small pieces. Check Answer