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The r.m.s. value of an ac of 50 Hz is 10...

The r.m.s. value of an ac of 50 Hz is 10 A. (1) The time taken by the alternating current in reaching from zero to maximum value is `5 xx10^(-3)` sec (2) The time taken by the alternating current in reaching from zero to maximum value is `2 xx 10^(-3)` sec (3) The peak current is 14.14 A (4) The peak current is 7.07 A

A

1, 2 and 3 are correct

B

1 and 2 are correct

C

2 and 4 are correct

D

1 and 3 are correct

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Knowledge Check

  • The rms value of an ac of 50Hz is 10A. The time taken be an alternating current in reaching from zero to maximum value and the peak value will be

    A
    `2xx10^(-2) s and 14.14 A`
    B
    `1xx10^(-2) s and 7.07 A`
    C
    `5xx10^(-3) s and 7.07 A`
    D
    `5xx10^(-3) s and 14.14 A`

  • The r.m.s value of an a.c of 59 Hz is 10 A . The time taken by the alternating current in reaching from zero to maximum valuef and the peak value of current will be

    A
    `2 xx 10^(-2) "sec"` and `14.14 A`
    B
    `1 xx 10^(-2) "sec"` and `7.07 A`
    C
    `5 xx 10^(-3) "sec"` and `7.07 A`
    D
    `5 xx 10^(-3) "sec"` and `14.14 A`

  • The root-mean-square value of an alternating current of 50 Hz frequency is 10 ampere. The time taken by the alternating current in reaching from zero to maximum value and the peak value of current will be

    A
    `2 xx 10^(-2) sec and 14.14 amp`
    B
    `1xx 10^(-2) sec and 7.07 amp`
    C
    `5 xx 10^(-3) sec and 7.07 amp`
    D
    `5 xx 10^(-3)sec and 14.14 amp`

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