Question 1 of 10
Which of the following is the primary difference between AC and DC current concerning the human body?
AC current encounters impedance (resistance and capacitive reactance), whereas DC current only encounters resistance in the body.
Question 2 of 10
What is the approximate average capacitance of the human body, as stated in the article?
The article states the average capacitance is approximately 100 pF (picofarads).
Question 3 of 10
What is the approximate resistance of the human body in dry conditions?
The article mentions the body's resistance can be up to 100,000 Ohms in dry conditions
Question 4 of 10
According to the article, does increasing the frequency from 50Hz to 60Hz significantly increase the danger to the human body?
The article states there is no significant difference in danger between 50Hz and 60Hz.
Question 5 of 10
In an AC circuit, what is the relationship between frequency and current in a capacitor?
In a capacitive circuit, current increases when frequency increases.
Question 6 of 10
Which of the following is more dangerous: 120V AC or 230V AC?
230V AC is more dangerous because the higher voltage can cause a larger current to flow through the body.
Question 7 of 10
What does RMS voltage stand for?
RMS stands for Root Mean Square.
Question 8 of 10
The article's example calculates a current of approximately ______ through the body when exposed to 120V at 50Hz or 60Hz.
The calculations in the article show a current of approximately 1.2 mA
Question 9 of 10
Which of the following best describes the effect of AC current on the human body?
AC current can cause muscle contractions, potentially leading to fibrillation.
Question 10 of 10
What is the effect of changing the frequency from 50Hz to 60Hz on the current flowing through the human body, according to the article's calculations?
The calculations show that the current remains approximately the same (1.2 mA) when the frequency changes.
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