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Earn 100
A Rowland ring has turns per unit length. On passing a current of , magnetic induction is measured to be .
Calculate magnetic susceptibility
Important Questions on Matter and Magnetism
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A magnetising field of produces a magnetic flux of in a bar of iron of cross-section . Calculate the permeability and susceptibility of the bar.
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A uniform magnetic field gets modified as shown below, when the specimans X and Y are placed in it. Identify the two specimans X and Y
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A uniform magnetic field gets modified as shown below, when the specimans X and Y are placed in it. State the reason for the behaviour of the field lines in X and Y.
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How will a dia-, para- and a ferromagnetic material behave when kept in a non-uniform external magnetic field ? Give two examples of each of these materials. Name two main characteristics of a ferromagnetic material which help us to decide its suitability for making an electromagnet. Which of these two characteristics should have high or low values for each of these two types of magnets ?
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An iron rod of cross sectional area 4 cm2 is placed with its length parallel to a magnetising field 1600 Am–1. The flux through the rod is 4 × 10–4 weber. Find out permeability of the material of the rod ?
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The unit of magnetic moment is -
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Magnetic field lines produced by a bar magnet, cuts each other :-
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If the angle of dip at two places are 30º and 45º respectively, then the ratio of horizontal component of earth’s magnetic field at two places assuming magnitude of total magnetic field of earth is same, will be :-
