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Moving Charges and Magnetism Test - 50

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Moving Charges and Magnetism Test - 50
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Weekly Quiz Competition
  • Question 1
    4 / -1
    A coil having N turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively. When a current I passes through the coil, the magnetic field at the centre is
    Solution

  • Question 2
    4 / -1
    A non-planar loop of conducting wire carrying a current I is placed as shown in the figure. Each of the straight sections of the loop is of length 2a. The magnetic field due to this loop at the point P(a, 0, a) points in the direction

    Solution

  • Question 3
    4 / -1

    Solution

  • Question 4
    4 / -1

    Solution

  • Question 5
    4 / -1
    Two circular concentric loops of radii r1= 20 cm and r2 = 30 cm are placed in the XY plane as shown in the figure. A current I = 7 amp is flowing through them. The magnetic moment of this loop system is

    Solution

  • Question 6
    4 / -1
    An ionized gas contains both positive and negative ions. If it is subjected simultaneously to an electric field along the +x direction and a magnetic field along the +z direction, then
  • Question 7
    4 / -1
    A current I flows in an infinitely long wire with cross-section in the form of a semicircular ring of radius R. The magnitude of the magnetic induction along its axis is
    Solution

  • Question 8
    4 / -1
    A particle of mass m and charge q moves with a constant velocity v along the positive x direction. It enters a region containing a uniform magnetic field B directed along the negative z direction, extending from x = a to x = b. The minimum value of v required so that the particle can just enter the region x >b is
    Solution

  • Question 9
    4 / -1
    For a positively charged particle moving in a x–y plane initially along the x–axis, there is a sudden change in its path due to the presence of electric and/or magnetic fields beyond P. The curved path is shown in the x – y plane and is found to be non-circular. Which one of the following combinations is possible

    Solution

  • Question 10
    4 / -1
    A horizontal rod of mass 10 gm and length 10 cm is placed on a smooth plane inclined at an angle of 60° with the horizontal, with the length of the rod parallel to the edge of the inclined plane. A uniform magnetic field of induction B is applied vertically downwards. If the current through the rod is 1.73 ampere, then the value of B for which the rod remains stationary on the inclined plane is
    Solution

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