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Moving Charges and Magnetism Test - 47

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Moving Charges and Magnetism Test - 47
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  • Question 1
    4 / -1
    Magnetic dipole moment of a rectangular loop is
    Solution

  • Question 2
    4 / -1
    If m is magnetic moment and B is the magnetic field, then the torque is given by
  • Question 3
    4 / -1
    Two long parallel copper wires carry currents of 5 A each in opposite directions. If the wires are separated by a distance of 0.5 m, then the force between the two wires is
    Solution

  • Question 4
    4 / -1
    Due to the flow of current in a circular loop of radius R, the magnetic induction produced at the centre of the loop is B. The magnetic moment of the loop is
    0 = Permeability constant)
    Solution

  • Question 5
    4 / -1
    The magnetic moment of a circular coil carrying current is
    Solution

  • Question 6
    4 / -1
    A long wire A carries a current of 10 amp. Another long wire B, which is parallel to A and separated by 0.1 m from A, carries a current of 5 amp, in the opposite direction to that in A. What is the magnitude and nature of the force experienced per unit length of B (μ0 = 4π × 10–7 weber/amp–m)
    Solution

  • Question 7
    4 / -1
    A stream of electrons is projected horizontally to the right. A straight conductor carrying a current is supported parallel to electron stream and above it. If the current in the conductor is form left to right then what will be the effect on electron stream
    Solution

  • Question 8
    4 / -1
    What is the shape of magnet used in moving coil galvanometer to make the magnetic fields radial?
  • Question 9
    4 / -1
    Two parallel wires of length 9 m each are separated by a distance 0.15 m. If they carry equal currents in the same direction and exert a total force of 30 × 10–7 N on each other, then the value of the current must be
    Solution

  • Question 10
    4 / -1
    A current i flows in a circular coil of radius r. If the coil is placed in a uniform magnetic field B with its plane parallel to the field, magnitude of the torque that acts on the coil is
    Solution

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