The scene in the 2006 CBS TV series Jericho (season 1 episode 6: 9:02) which demonstrates the effects of an electromagnetic pulse (EMP).
For fiction which describes a world after EMP listen to this audiobook One Second After by William R. Forschten
part one: https://www.youtube.com/watch?v=wRzy42-hF6k
part two: https://www.youtube.com/watch?v=ge09hKUERUE
and its sequel One Year After: https://www.youtube.com/watch?v=7dCJTevQ8no
