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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 .................

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

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A bar magnet having a magnetic moment of `2xx10^4jt^(-1)` is free to rotate in a horizontal plane. A horizontal magnetic field `B=6xx10^(-4)` Tesla exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction `60^0` from the field

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

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A magnet of length 0.1 m and pole strength `10^(-4)` A.m. is kept in a magnetic field of 30 tesla at an angle of `30^0` . The couple acting on it is ...................` xx10^(-4)`

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In the case of bar magnet, lines of magnetic

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A small bar magnet of moment M is placed in a uniform field of H. If magnet makes an angle of `30^0` with field, the torque acting on the magnet

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The effective length of a magnet is 31.4 cm and its pole strength is 0.5 A.m. The magnetic moment, if it is bent in the form of a semicircle will be ......................Amp.`m^2`

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

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A bar magnet of length 10 cm and having the pole strength equal `00.1xx10^(-3)` to is kept in a magnetic field having magnetic induction (B) equal to `4pixx10^(-3)` tesla. It makes an angle of `30^0` with the direction of magnefic induction. The value of the torque acting on the magnet is ......................

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

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A small bar magnet has a magnetic moment 1.2 A.`m^2` . The magnetic field at a distance 0.1 m on its axis will be .........................

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

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If a plastic rod rubbed with fur is made to touch two small pith balls suspended nearby, then which figure shows their final

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A comb runs through one’s dry hair attracts small bits of paper. This happens

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One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass as of A is given equal amount of negative charge.

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In nature, the electric charge of any system is always equal

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If the charge on the body is `1 nC`, then how many electrons are present on the

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Charge on a body is `q_1` and it is used to charge another body by induction. Charge on second body is found to be `q_2` after charging,

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Force (F ) between two charges varies with distance (r) between them

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The unit of electrical permittivity

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The force of interaction between two charges `q_1 = 6 muC and q_2= 2 muC` is `12 N`. If charge `q =-2 muC` is added to each of the charges, then the new force of interaction

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

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