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If the number of turns of a solenoid is ...

If the number of turns of a solenoid is doubled, keeping the other factors constant, how does the self-inductance of the solenoid change?

Text Solution

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The correct Answer is:
As `Lpropot N^(2)`, hence self-inductance becomes 4 times of its original value.
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Knowledge Check

  • Self-inductance of a solenoid depend on-

    A
    the number of turns N of the coil
    B
    the area of cross-section A and length l of the coil.
    C
    the permeability of the core of the coil
    D
    all the above

  • If both the number of turns and core length of an inductor is doubled keeping other factors constant, then its self-inductance will be:

    A
    Unaffected
    B
    Doubled
    C
    Halved
    D
    Quadrupled

  • Self induction of a solenoid is

    A
    Directly proportional to current flowing through the coil
    B
    Directly proportional to its length
    C
    Directly proportional to area of cross-section
    D
    Inversely proportional to area of cross-section

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