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jatasia

  • 2 years ago

A 2.17-μF capacitor is connected to a 270-V, 110.0-Hz line. Find the peak value of the current through the capacitor.

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  1. kropot72
    • 2 years ago
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    Do you know how to calculate the reactance of the capacitor?

  2. jatasia
    • 2 years ago
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    yep i have it 666.76

  3. jatasia
    • 2 years ago
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    i just dont understand how to do the peak value

  4. kropot72
    • 2 years ago
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    The RMS value of current is given by \[\frac{270}{666.76}amps\] The peak value is obtained by multiplying the RMS value by \[\sqrt{2}\]

  5. jatasia
    • 2 years ago
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    .572?

  6. kropot72
    • 2 years ago
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    Yes, although I get 0.573 amps when rounded.

  7. jatasia
    • 2 years ago
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    welp it stays its wrong I have an example of one that is right with out the work

  8. jatasia
    • 2 years ago
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    A 2.11-μF capacitor is connected to a 110-V, 120.0-Hz line. Find (a) the capacitive reactance; 628.574024849508 Ω (b) the peak value of the current through the capacitor. 174.999277175566 mA

  9. kropot72
    • 2 years ago
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    (a) Is the correct answer (b) The current stated in the answer is the RMS (root mean square) value, and is not the peak value.

  10. jatasia
    • 2 years ago
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    ohhh i seee

  11. jatasia
    • 2 years ago
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    thats prob why it was confusing me i suppose

  12. kropot72
    • 2 years ago
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    @jatasia It is not stated in the questions whether or not the line voltage is the RMS or the peak value. By convention if the value of an AC voltage is stated it is regarded as an RMS value unless stated otherwise.

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