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A straight wire of mass 200 g and length...

A straight wire of mass 200 g and length 1.5 m carries a current of 2 A .It is suspended in mid air by a unifrom horizontal magnetic fleld B , What is the magnitude of the magnetic fleld ?

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A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. It is suspended in mid-air by a uniform horizontal magnetic field B. What is the magnitude of the magnetic field?

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A straight wire having mass of 1.2 kg and length of 1m carries a current of 5 A. If the wire is suspended in mid-air by a uniform horizontal magnetic field, then the magnitude of field is

A 2.5 m long straight wire having mass of 500 g is suspended in mid air by a uniform horizontal magnetic field B. If a current of 4 A is passing through the wire then the magnitude of the field is ("Take g "10 m s^(-2))

A straight horizontal wire of mass 10mg and length 1.0 cm carries a current of 2.0 A. what minimum megnetic field B should be applied in the region so that the magnetic force on the wire may balance its weight?

A wire of mass 100 g, length 1 m and current 5 A is balanced in mid air by a magnetic field B, then find the value of B.

A circular coil of 70 turns and radius 5 cm carrying a current of 8 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.5 T. The field lines make an angle of 30^(@) with the normal of the coil then the magnitude of the counter torque that must be applied to prevent the coil from turning is

Knowledge Check

  • A straight wire having mass of 1.2 kg and length of 1m carries a current of 5 A. If the wire is suspended in mid-air by a uniform horizontal magnetic field, then the magnitude of field is

    A
    0.65T
    B
    1.53T
    C
    2.4T
    D
    3.2T

  • A 2.5 m long straight wire having mass of 500 g is suspended in mid air by a uniform horizontal magnetic field B. If a current of 4 A is passing through the wire then the magnitude of the field is ("Take g "10 m s^(-2))

    A
    0.5T
    B
    0.6T
    C
    0.25T
    D
    0.8T

  • A circular coil of 70 turns and radius 5 cm carrying a current of 8 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.5 T. The field lines make an angle of 30^(@) with the normal of the coil then the magnitude of the counter torque that must be applied to prevent the coil from turning is

    A
    33 Nm
    B
    3.3 Nm
    C
    `3.3 xx 10^(-2)Nm`
    D
    `3.3 xx 10^(-4)Nm`