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The household suply of electricity is at...

The household suply of electricity is at `220 V` (rms value) and `50 Hz`. Find the peak voltage and the least possible time in which the voltage an change from the rms value to zero.

Text Solution

Verified by Experts

The correct Answer is:
`220sqrt2V, 2.5ms`
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In india we use alternating voltage with rms value of 220 V and frequency 50 Hz. (a) Calculate corresponding peak voltage . (b) What minimum time the voltage takes to change from 0 to rms value ? (c ) What maximum time will it take to become 0 starting from rms value ?

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Knowledge Check

  • The peak voltage of an ac supply is 440 V, then its rms voltage is

    A
    `31.11 V`
    B
    `311.1 V`
    C
    `41.11 V`
    D
    `411.1V`

  • An AC source is rated at 220V, 50 Hz. The time taken for voltage to change from its peak value to zero is

    A
    `50 sec`
    B
    `0.02 sec`
    C
    `5 sec`
    D
    `5xx10^(-3)sec`

  • 220 V AC means rms voltage and voltage amplitude have the values

    A
    220 V, 311 V
    B
    220 V, 110 V
    C
    220 V, 420 V
    D
    240 V, `(220)/(l)`

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