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State the average or mean value of an al...

State the average or mean value of an alternating emf? Obtain the expression for it

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Rms value of an alternating emf.

Define average value of alternating current . Derive an expression for it .

Knowledge Check

  • The r.m.s value of alternating e.m.f. is

    A
    twice peak value
    B
    `sqrt(2)` times greater than peak value
    C
    equal to peak value
    D
    less than peak value

  • The average value of alternating current over a complete cycle is

    A
    zero
    B
    1 rms
    C
    ` (I ) / ( sqrt 2 ) `
    D
    ` 2I `

  • Assertion The average value of alternating emf is 63.39% of the peak value . Reason The rms value of alternating emf is70.72% of peak value

    A
    Both assertin and reason are true and reason is the correct explanation of assertion
    B
    Both assertion and reason are true but reason is not the correct explanation of assertion
    C
    Assertion is true but reason is flase
    D
    Both assertion and reason are false

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