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A long solenoid of 50 cm length having 1...

A long solenoid of 50 cm length having 100 turns carries a current of 2.5A. The magnetic field at centre of solenoid is:

A

`6.28 x 10^-4 T`

B

`3.14 x 10^-4 T`

C

`6.28 x 10^-5 T`

D

`3.14 x 10^-5 T`

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Knowledge Check

  • A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magneitc field at the centre of the solenoid is : (mu_(o) = 4 pi xx 10^(-7) TmA^(-1))

    A
    `3.14 xx 10^(-4)` T
    B
    `6.28 xx 10^(-5)` T
    C
    `3.14 xx 10^(-5)` T
    D
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  • A long solenoid has 200 turns per cm and carries a current of 2.5A. The magnetic field at its centre is

    A
    `3.14xx10^-2Wb//m^2`
    B
    `6.28xx10^-2Wb//m^2`
    C
    `9.42xx10^-2Wb//m^2`
    D
    `12.56xx10^-2Wb//m^2`

  • A long solenoid has 200 turns/cm and carries a current of 2.5 A. The magnetic field at its centre is ("Give "mu_(0)=4pixx10^(-7)("Weber")/("Amp-meter"))

    A
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    B
    `6.28xx10^(-2)Wb//m^(2)`
    C
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    D
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