What is the term used to identify an AC...

Question 1 of 27070FMf8G44J82s6Iwvy2kXk

What is the term used to identify an AC voltage that would cause the same heating in a resistor as a corresponding value of DC voltage?

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Question 1 of 27070

What is the term used to identify an AC voltage that would cause the same heating in a resistor as a corresponding value of DC voltage?

🔍 Key Concepts

• AC vs DC heating effect in a resistor (think about power dissipation, P = V²/R) • The definition of effective value of an AC voltage or current • Difference between instantaneous, average, and a special "effective" measure of AC magnitude

💭 Think About

• Which measure of AC voltage is specifically defined so that it produces the same heating effect in a resistor as a certain DC voltage? • Think about how power in a resistor depends on the square of the voltage. Which of these choices involves squaring, averaging, and then taking a root? • Which option is a way to quantify the size of an AC waveform, rather than describing its shape (like sine/cosine) or a circuit property (like power factor)?

✅ Before You Answer

• Identify which choice represents an effective value of AC voltage that you can directly compare to DC voltage for heating effects. • Eliminate any terms that describe waveform shape (like sine/cosine) rather than a magnitude measure. • Verify which term is computed by: square the instantaneous values over a cycle, find their mean, then take the square root. That is the one that matches the definition in the question.