Machine-translated by Google. Questions are authored in English.
Top

Discussion

The bright flash of a lightning discharge is chiefly

  • A.the return stroke travelling upward
  • B.the stepped leader travelling downward
  • C.the upward streamer from the ground
  • D.the attachment process itself

Answer: A

The return stroke carries the great majority of the current and produces nearly all the light. The leader that preceded it is orders of magnitude fainter and is not normally seen. Almost all the emitted light comes from the return stroke.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.