Electrical noise refers to unwanted electrical signals that interfere with the normal operation of electronic devices. It can originate from various sources, such as power lines, motors, or even natural phenomena like lightning. This noise can disrupt communication signals, degrade audio quality, and affect the performance of sensitive equipment. There are different types of electrical noise, including thermal noise, which arises from the random motion of electrons in a conductor, and electromagnetic interference (EMI), caused by external electromagnetic fields. Managing electrical noise is crucial in designing reliable electronic systems, ensuring they function correctly in various environments.