Given v (t) = 4 Sin 200 πt. Sketch the voltage function of time. Determine the waveform as a rms value of the wave form and its period. Y

Question
**Problem Statement:**

Given \( v(t) = 4 \sin(200\pi t) \).

1. **Sketch the voltage waveform as a function of time.**
2. **Determine the RMS value of the waveform and its period.**

**Solution:**

1. **Sketching the Voltage Waveform:**

   For \( v(t) = 4 \sin(200\pi t) \), the waveform is a sinusoidal function. The amplitude is 4, which means the peak values of the sine wave will be +4 and -4. The frequency \( f \) can be found from the term \( 200\pi t \), where \( \omega = 2\pi f \). Here, \( \omega = 200\pi \), so:

   \[
   f = \frac{200\pi}{2\pi} = 100 \, \text{Hz}
   \]

2. **Determine the RMS Value and Period:**

   - **RMS Value:**

     The RMS (Root Mean Square) value for a sine wave \( v(t) = A \sin(\omega t) \) is given by:

     \[
     V_{\text{RMS}} = \frac{A}{\sqrt{2}} = \frac{4}{\sqrt{2}} = 2\sqrt{2} \approx 2.83
     \]

   - **Period:**

     The period \( T \) is the reciprocal of the frequency \( f \):

     \[
     T = \frac{1}{f} = \frac{1}{100} = 0.01 \, \text{seconds} \, (10 \, \text{ms})
     \]

The waveform is therefore a 100 Hz sine wave with a period of 10 ms and an RMS value of approximately 2.83 volts.
Transcribed Image Text:**Problem Statement:** Given \( v(t) = 4 \sin(200\pi t) \). 1. **Sketch the voltage waveform as a function of time.** 2. **Determine the RMS value of the waveform and its period.** **Solution:** 1. **Sketching the Voltage Waveform:** For \( v(t) = 4 \sin(200\pi t) \), the waveform is a sinusoidal function. The amplitude is 4, which means the peak values of the sine wave will be +4 and -4. The frequency \( f \) can be found from the term \( 200\pi t \), where \( \omega = 2\pi f \). Here, \( \omega = 200\pi \), so: \[ f = \frac{200\pi}{2\pi} = 100 \, \text{Hz} \] 2. **Determine the RMS Value and Period:** - **RMS Value:** The RMS (Root Mean Square) value for a sine wave \( v(t) = A \sin(\omega t) \) is given by: \[ V_{\text{RMS}} = \frac{A}{\sqrt{2}} = \frac{4}{\sqrt{2}} = 2\sqrt{2} \approx 2.83 \] - **Period:** The period \( T \) is the reciprocal of the frequency \( f \): \[ T = \frac{1}{f} = \frac{1}{100} = 0.01 \, \text{seconds} \, (10 \, \text{ms}) \] The waveform is therefore a 100 Hz sine wave with a period of 10 ms and an RMS value of approximately 2.83 volts.
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