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Moving Charges and Magnetism Test - 26
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Moving Charges and Magnetism Test - 26

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  • Question 1/10
    4 / -1
    An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a current of i ampere and the radius of the circular loop is r metre. Then the magnetic induction at its centre will be

    Solutions

  • Question 2/10
    4 / -1
    A current i ampere flows in a circular arc of wire whose radius is R, which subtends an angle 3π /2 radian at its centre. The magnetic induction B at the centre is

    Solutions

  • Question 3/10
    4 / -1
    A horizontal overhead power line is at a height of 4m from the ground and carries a current of 100A from east to west. The magnetic field directly below it on the ground is (μ0 = 4π × 10–7 TmA–1)
    Solutions

  • Question 4/10
    4 / -1

    Solutions

  • Question 5/10
    4 / -1
    A helium nucleus makes a full rotation in a circle of radius 0.8 metre in two seconds. The value of the magnetic field B at the centre of the circle will be
    Solutions

  • Question 6/10
    4 / -1
    Consider two straight parallel conductors A and B separated by distance x and carrying individual currents iA and iB respectively. If the two conductors attract each other, it indicates that
  • Question 7/10
    4 / -1
    The strength of the magnetic field at a point r near a long straight current carrying wire is B. The field at a distance r/2 will be
    Solutions

  • Question 8/10
    4 / -1
    Field at the centre of a circular coil of radius r, through which a current I flows is
    Solutions

  • Question 9/10
    4 / -1
    Current ‘I’ is flowing in a conductor shaped as shown in the figure. The radius of the curved part is r and the length of straight portion is very large. The value of the magnetic field at the centre O will be

    Solutions

  • Question 10/10
    4 / -1
    The magnetic field B with in the solenoid having n turns per metre length and carrying a current of i ampere is given by
    Solutions

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