i was made aware of this scenario some time ago and got myself all worked up about it. this article does a good job of explaining the situation and giving a realistic summary of possible effects of a massive Electro-Magnetic Pulse (EMP) burst whether a result of natural phenomena or man-made causes.
i hope the article informs you without making you panic.
the world is full of scenarios to fear. what gives me peace in times of fear and uncertainty is knowing that God has been, is, and always will be in control of the affairs of the universe. no matter the stock that men place in their ability to control their own destiny and that of the world, God always has the final say.
Psalm 46; Jeremiah 10:10, 12, 23; Matthew 6:33-34
–the civil commentator