Noise in electronics is like the static that can be heard on a radio or TV. It's the unwanted sound or signal that can interfere with the regular signals that electronics use to communicate.
Imagine you and your friend are playing catch with a ball. But there are lots of other people around, making noises and throwing their own balls. It can be hard to hear each other and catch the ball when there is a lot of noise around.
In the same way, electronics use signals to communicate with each other. But if there is too much noise, it can be hard for the signals to get through and be understood properly. This noise can come from things like other electronic devices, electrical interference, or even just background radiation from space!
Engineers work hard to design electronics that can filter out as much noise as possible, so that signals can be communicated clearly and accurately. It's like making it easier for you and your friend to play catch by going to a quieter place with less distractions.