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What is a solenoid ? Discuss the magnet...

What is a solenoid ? Discuss the magnetic field due to a current - carrying solenoid .

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Solenoid : A coil of many circular turns of insulated copper wire wrapped closely in the shape of cylinder is called solenoid .
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Knowledge Check

  • On what factor does the direction of the magnetic field produced by a current - carrying straight wire depend ?

    A
    The magnitude of the electric current
    B
    The direction of the electric current
    C
    The length of the straight wire
    D
    The material of the straight wire .
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    What is toroid ? Obtain formula for the magnitude of magnetic field due to current carrying toroid.

    What is the direction of the magnetic field inside the current - carrying circular ring as shown in the following figure ?