name a device that converts the change in intensity of illumination into charges in electric current. give three applications of this device.
the device is the LED ..
it changes the illumination of intensity into electric charge or current ..
APPLICATION OF LED
1- its used in everywhere such as the decoration lights ,and the remote of tv ,
2- it can be used in place of cfl bulb .
3- its used in burglar alaram also ..
it have a low warmup time and almost its giving the high intensity of light ..