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The correct curve between the magnetic induction (B) along the axis of a long solenoid due to current flow 1 in it and distance x from one end

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When any coil is placed in a uniform mag. field torque is acting on it. The graph of `tau to theta`

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Graph of force per unit length between two long parallel current carrying conductors and the distance between them is

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An infinitely long hollow conducting cylinder with inner radius `R/2` and outer radius R carries a uniform current density along its length. The magnitude of the magnetic field `|vecB|` as a function of the radial distance r from the axis is best represented

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A charge Q is uniformly distributed over the surface of non-conducting disc of radius R. The disc rotates about an axis perpendicular to its plane and passing tarough its centre with an angular velocity co. As a result of this rotation a magnetic field of induction B is obtained at the centre of the disc. If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc then the variation of the magnetic induction at the centre of the disc will be represented by the

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For substances hysteresis B-H curves are given as shown in the figure. For making temporary magnet which of the following group is

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A curve between magnetic moment and temperature of magnet

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The variation of mag. suceptibility `(chi)` with temperature for a diamagnetic substance is best represented

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The variation of magnetic suceptibility `(chi)` with mognetising field for a paramognetic substance

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The variation of magnetic suceptibility `(chi)` with absolute temperature T for a termomagnetic material

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The variation of the intensity of magnetisation (I) with respect to the magnetising field (H) in a diamagnetic substance is described by the

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The most appropriate magnetization `Mto` magnetising field H curve for a paramagnetic substance

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An iron rod of length L and magnetic moment M is bent in the form of a semi circle. Now its magnetic moment will

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Unit of magnetic Flux density is

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Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given

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A magnet of magnetic moment M and pole strength m is divided in two equal parts, then magnetic moment of each part will

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If a magnet of pole strength m is divided into four parts such that the length and width of each part is half that of initial one, then the pole strength of each part will

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The magnetism of magnet is due

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The magnetic field at a point x on the axis of a small bar magnet is equal to the at a point y on the equator of the same magnet. The ratio of the distances of x and y from the centre of the magnet

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The magnetic field due to a short magnet at a point on its axis at a distance x cm from the middle point of the magnet is 200 gauss. The magnetic field at a point on the neutral axis at a distance x cm from the middle of the magnet is .................

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