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Author Question: In a capacitor in an AC circuit, the voltage: a. lags the current by 90. b. may lead or lag the ... (Read 100 times)

appyboo

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on: Jul 28, 2018
In a capacitor in an AC circuit, the voltage:
 a. lags the current by 90.
  b. may lead or lag the current depending on the frequency.
  c. leads the current by 90.
  d. is in phase with 70.7 of the current.

Question 2

I stretch a rubber band and plunk it to make it vibrate in its fundamental frequency. I then stretch it to twice its length and make it vibrate in the fundamental frequency once again. This rubber band is made so that doubling its length doubles the tension and reduces the mass per unit length by a factor of 2 . The new frequency will be related to the old by a factor of:
 a. 4.0.
  c. 1.4.
  b. 2.0.
  d. 1.0.


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CourtneyCNorton

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Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


appyboo

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Reply #2 on: Jul 28, 2018
Thanks


CourtneyCNorton

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Reply #3 on: Jul 28, 2018
Welcome :)


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