Output Voltage Equation:
V_{out} = V_{in} \left(\frac{1}{1 + j\omega RC}\right)
Variables:
 V_out : Output voltage of the filter.
 V_in: Input voltage to the filter.
 R: Resistance
 C: Capacitance.
 Ī: Angular frequency of the input signal (đ = 2đđ, where đ is the frequency in hertz).
 j: Imaginary unit
j = \sqrt{1}
Frequency Response:

At low frequencies
H(\omega) \approx 1 \implies V_{out} \approx V_{in}The output voltage is approximately equal to the input voltage, meaning low frequencies pass through with little attenuation.

At high frequencies
H(\omega) \approx \frac{1}{j\omega RC} \implies V_{out} \approx \frac{V_{in}}{j\omega RC}The output voltage decreases, meaning high frequencies are attenuated.
This filter is widely used in electronics for signal conditioning, noise reduction, and smoothing signals.
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