Current from a sine wave signal

In summary, the conversation discussed calculating the current through a 10 kilo-Ohm resistor connected to a 20V peak-to-peak sine wave signal. The peak and rms currents were found to be 1E-3 A and 7.07E-4 A, respectively. However, the method for finding the average current was not determined. The question of what wattage rating the resistor should have was also raised.
  • #1
dancergirlie
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Homework Statement


Given a sine wave signal (20V PP) connected to a 10 kilo-Ohm resistor. Calculate the current through the resistor in terms of average, rms, and peak currents. What wattage rating should the resistor have?


Homework Equations


Vrms=(1/Sqrt(2))(Vp)
V=IR

The Attempt at a Solution



For peak I'm assuming that since peak voltage means peak current, we would find the peak current by:

Vp=IR where Vp=Vpp/2=20/2=10V

So: Imax=(10V)/(10E3)= 1E-3 A

Since Vrms=Vp/sqrt(2)

Irms=Vrms/R=(10/sqrt(2))/(10E3)=7.07E-4A

I don't know how to fine I average though...

Any help would be great!
 
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  • #2
What's the average of a sinewave?
 

Related to Current from a sine wave signal

1. What is a sine wave signal?

A sine wave is a type of periodic waveform that represents a smooth oscillation of a repeating cycle. It is a mathematical function that describes a smooth repetitive oscillation.

2. What is the frequency of a sine wave signal?

The frequency of a sine wave signal is the number of cycles per second, measured in Hertz (Hz). It represents how many times the wave repeats itself in one second.

3. How is a sine wave signal generated?

A sine wave signal can be generated by an oscillating current or voltage through a circuit or by a mechanical device that creates vibrations, such as a tuning fork. It can also be represented mathematically using a trigonometric function.

4. What is the amplitude of a sine wave signal?

The amplitude of a sine wave signal is the maximum displacement of the wave from its equilibrium position. It represents the strength or intensity of the signal.

5. What are the applications of sine wave signals?

Sine wave signals have a wide range of applications in various fields, including electronics, telecommunications, acoustics, and physics. They are used in signal processing, audio and radio transmissions, and in measuring and analyzing various physical phenomena.

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