magnetism

Related Questions

• The bob of a simple pendulum is replaced by a magnet. The oscillations are set along the length of the magnet. A copper coil is added so that one pole of the magnet passes in and out of the coil. The coil is short-circuited. Then which one of the following happens

  ---

• A bar magnet is situated on a table along east-west direction in the magnetic field of earth. The number of neutral points, where the magnetic field is zero, are

  ---

• Two identical short bar magnets, each having magnetic moment of 10 Am2, are arranged such that their axial lines are perpendicular to each other and their centres be along the same straight line in a horizontal plane. If the distance between their centres is 0.2 m, the resultant magnetic induction at a point midway between them is $({\mu _0} = 4\pi \times {10^{ - 7}}H{m^{ - 1}})$

  ---

• Before using the tangent galvanometer, its coil is set in

  ---

• Identify the paramagnetic substance

  ---