Electric sparks due to lightning have the same phenomenon as that of the sparks observed when one takes off woollen clothes.
True
When we take off woollen clothes in the dark, we can see a spark and crackling sound. In 1752 Benjamin Franklin, an american scientist, showed that lightning and the spark from your clothes are the same phenomena. It is because of static electricity. When we rub against something, we get charged. Transfer of charges takes place which results in sparks.