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Unit of inten...

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Unit of intensity of magnetisation is ampere per meter. how?

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Q. The ratio of intensity of magnetisation and magnetising field is called

Q. Which of the following pairs has quantities of the same dimensions?
(a) Magnetic field B and magnetising field intensity H
(b) Magnetic field B and intensity of magnetisation I
(c) Magnetising field intensity H and intensity of magnetisation I
(d) Longitudinal strain and magnetic susceptibility

Q. For a magnetising field of intensity

2 \times 10^{3} {Am}^{- 1}

280 K

acquires intensity of magnetisation of

4.8 \times 10^{- 2} {Am}^{- 1} .

If the temperature of the metal is raised to

320 K

, what will be the intensity of magnetisation ?

Q. A permanent magnet in the shape of a thin cylinder of length

50

cm has intensity of magnetisation

10^{6} A m^{- 1}

. The magnetisation current is

Q. Derive the formula

\frac{F}{l} = \frac{μ_{o}}{2 π} \cdot \frac{i_{1} i_{2}}{r}

as the force per unit length between two parallel wires each of length l meter, carrying currents

i_{1}

i_{2}

amperes and separated by a distance r meters. Define ampere with the help of this formula.

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