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Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Magnetic field lines are always nearly normal to the surface of a ferromagnet at every point. (This fact is analogous to the static electric field lines being normal to the surface of a conductor at every point.)

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a

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Explain: Explain qualitatively on the basis of domain picture the irreversibility in the magnetisation curve of a

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Explain: The hysteresis loop of a soft iron piece has a much smaller area than that of a carbon steel piece. If the material is to go through repeated cycles of magnetisation, which piece will dissipate greater heat

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Explain: ‘A system displaying a hysteresis loop such as a ferromagnet, is a device for storing memory?’ Explain the meaning of this

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Explain: What kind of ferromagnetic material is used for coating magnetic tapes in a cassette player, or for building ‘memory stores’ in a modern

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Explain: A certain region of space is to be shielded from magnetic fields. Suggest a

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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An element `vec(dl)= dxuarr` (where dx = 1 cm) is placed at the origin and carries a large current I = 10 Amp. What is the mag. field on the Y-axis at a distance of 0.5 meter

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two straight long conductors AOB and COD are perpendicular to each other and carry currents I1 and I2 . The magnitude of the mag. field at a point 'P' at a distance 'a' from the point 'O' in a direction perpendicular to the plane ABCD

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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`BrarrR` graph. The mag. field B at a distance r from a long straight wire carrying a current varies with r as shown in

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A current path shaped as shown in figure produces a mag. field at point 'P', the centre of the arc BC. If the arc subtends an angle of `30^0` and the radius of the arc is 0.6 meter. What is the magnitude of the field at point P if the current is 3 AMP

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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As shown in figure a conductor carrying a current I. Find the magnetic field intensity at the point

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A length L of wire carries a steady current 1. It is bent first to form a coil of 1 turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the centre caused by the same current

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The magnetic induction at a point P which is at a distance 4 cm from a long current carrying wire is `10^(-8 )` tesla. The field of induction at a distance 12 cm from the same current would be

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The strength of the magnetic field at a point y near a long straight current carrying wire is B. The field at a distance y/2 will

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The mag. field (B) at the centre of a circular coil of radius 'a', through which a current I flows

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A current of a 1 Amp is passed through a straight wire of length 2 meter. The magnetic field at a point in air at a distance of 3 meters from either end of wire and lying on the axis of wire will

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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If the strangth of the magnetic field produced at 10 cm away from a infinilely long straight conductor is `10^(-5)` tesla. The value of the current flowing in the conductor will be...............

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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