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Moving Charges ...

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  • Question 1
    4 / -1

    A neutral point is obtained at the centre of a vertical circular coil carrying current. The angle between the plane of the coil and the magnetic meridian is

  • Question 2
    4 / -1

    One Tesla is equal to

  • Question 3
    4 / -1

    A current carrying wire in the neighbourhood produces

  • Question 4
    4 / -1

    A wire PQR is bent as shown in figure and is placed in a region of uniform magnetic field B. The length of PQ = QR = l. A current I ampere flows through the wire as shown. The magnitude is of the force on PQ and QR will be

  • Question 5
    4 / -1

    Energy in a current carrying coil is stored in the form of

  • Question 6
    4 / -1

    The magnetic field at the centre of coil of n turns, bent in the form of a square of side 2l, carrying current i, is

  • Question 7
    4 / -1

    Which of the following gives the value of magnetic field according to Biot-Savart\'s law?

  • Question 8
    4 / -1

    A wire oriented in the east-west direction carries a current eastward. Direction of the magnetic field at a point to the south of wire is

  • Question 9
    4 / -1

    Magnetic field due to a ring having n turns at a distance xon its axis is proportional to (if r = radius of ring)

  • Question 10
    4 / -1

    A and B are two concentric circular conductors of centre Oand carrying currents i1 and i2 as shown in the adjacent figure. If ratio of their radii is 1 : 2 and ratio of the flux densities at Odue to A and B is 1 : 3, then the value of i1 /i2 is

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