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When straight conductor moves in externa...

When straight conductor moves in external magnetic field (LHP rule):-

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The correct Answer is:
C, D
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A 0.4 meter long straight conductor moves in a magnetic field of magnetic induction 0.9 Wb//m^(2) with a velocity of 7 m/sec. Calculate the emf induced in the conductor under the condition when it is maximum.

Name and state the rule to find the direction of : (a) current induced in a coil due to its rotation in a magnetic field. (b) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.

Knowledge Check

  • Direction of force acting on a current carrying conductor vec (L) in an external magnetic field vec(B) is

    A
    perpendicular to `vec(L) and vec(B)`
    B
    perpendicular to `vec(B)`
    C
    perpendicular to `vec(L)`
    D
    parallel to `vec(L) and vec(B)`

  • The magnetic force vecF on a current carrying conductor of length I in an external magnetic field vecB is given by

    A
    `(IxxvecB)/(vecl)`
    B
    `(veclxxvecB)/(I)`
    C
    `I(vecl xx vecB)`
    D
    `l^(2)vecl xxvecB`

  • When a conductor is moved in a steady magnetic field or is kept in a changing magnetic field, the currents developed in it are called as

    A
    Faraday's currents
    B
    Foucault's currents.
    C
    Ampere's currents
    D
    Fleming's currents

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    State the rule to determine the direction of a (i) magnetic field produced around a straight conductor-carrying current (ii) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it and (iii) current induced in a coil due to its rotation in a magnetic field.

    State the rule to determine the direction of a (i) magnetic field produced around a straight conductor-carrying current, (ii) force experienced by a current -carrying straight conductor placed in a magnetic field which is perpendicular to it, and (iii) current induced in a coil due to its rotation in a magnetic field.

    State the rule to determine the direction of a (i) magnetic field produced around a straight conductor-carrying current (ii) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it and (iii) current induced in a coil due to its rotation in a magnetic field.

    A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T. The velocity of the conductor is 15ms^(-1) and is directed perpendicular to the field. The emf induced between the two ends of the conductor is

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