1. Inform you about time table of exam.
2. Inform you about new question papers.
3. New video tutorials information.
- Diamagnetic, Paramagnetic, and Ferromagnetic Substances, with Examples
- Dia and Para Magnetic Material
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- Material Magnetism Characteristics
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- Diamagnetism, Paramagnetism, Ferromagnetism
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- Ferromagnetism on the basis of domain theory
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- Matter and Magnetism part 22 (Paramagnetic and Ferromagnetic Substance)
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- Matter and Magnetism part 21 (Dimagnetic Substance)
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An iron rod of area of cross-section 0.1m2 is subjected to a magnetising field of 1000 A/m. Calculate the magnetic permeability of the iron rod. [Magnetic susceptibility of iron = 59.9, magnetic permeability of vacuum = 4π x 10-7 S. I. unit]
Obtain an expression for the induced e.m.f. in a coil rotating with uniform angular velocity in
uniform magnetic field. Plot a graph of variation of induced e.m.f. against phase (Θ = ωt) over one cycle.
Show diagrammatically the behaviour of magnetic field lines in the presence of (i) paramagnetic and (ii) diamagnetic substances. How does one explain this distinguishing feature?
In what way is the behaviour of a diamagnetic material different from that of a paramagnetic, when kept in an external magnetic field?
A meter gauge train is heading north with speed 54 km/hr in earth's magnetic field 3 x 10-4T. The e.m.f. induced across the axle joining the wheels is ..........
(a) 0.45 mV
(b) 4.5 mV
(c) 45 mV
(d) 450 m V
Out of the two magnetic materials, 'A' has relative permeability slightly greater than unity while 'B' has less than unity. Identify the nature of the materials 'A' and 'B'. Will their susceptibilities be positive or negative?