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Moving Charges ...

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  • Question 1
    4 / -1

    The magnetic induction at the centre 0 in the figure shown is

  • Question 2
    4 / -1

    Field inside a solenoid is

  • Question 3
    4 / -1

    In the above question, the magnetic induction at O due to the whole length of the conductor is

  • Question 4
    4 / -1

    In the figure shown there are two semicircles of radii r1 and r2 in which a current i is flowing. The magnetic induction at the centre Owill be

  • Question 5
    4 / -1

    A wire of length l is bent into a circular loop of radius R and carries a current I. The magnetic field at the centre of the loop is B. The same wire is now bent into a double loop of equal radii. If both loops carry the same current I and it is in the same direction, the magnetic field at the centre of the double loop will be

  • Question 6
    4 / -1

    A particle carrying a charge equal to 100 times the charge on an electron is rotating per second in a circular path of radius 0.8 metre. The value of the magnetic field produced at the centre will be (μ0 = permeability for vacuum)

  • Question 7
    4 / -1

    In hydrogen atom, an electron is revolving in the orbit of radius 0.53 Å with 6.6 × 1015 rotations/second. Magnetic field produced at the centre of the orbit is

  • Question 8
    4 / -1

    Magnetic effect of current was discovered by

  • Question 9
    4 / -1

    A long solenoid has a radius a and number of turns per unit length n. If it carries a current i, then the magnetic field on its axis is directly proportional to

  • Question 10
    4 / -1

    A cell is connected between two points of a uniformly thick circular conductor. The magnetic field at the centre of the loop will be
    (Here i1 and i2 are the currents flowing in the two parts of the circular conductor of radius \'a\' and μ0 has the usual meaning)

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