why we should not keep the magnet near by electrical appliances?
When we place a magnet near to a television, magnet creates distortion on the screen. And if we left the magnet for long time the distortion will be there even after we removed magnet.
In computer the hard disk used is a small magnet for storing data. If we place a magnet near to it, it can disturb the data storage activity and can damage our data which we cannot retrieved in any way.