Faraday Cage
A Faraday cage or Faraday shield is an enclosure made of a conducting material. The fields within a conductor cancel out with any external fields, so the electric field within the enclosure is zero.
These Faraday cages act as big hollow conductors. You can put things to shield them from electrical fields. Any electrical shocks the cage receives, pass harmlessly around the outside of the cage.
What is the electrical force inside a Faraday cage, when it is struck by lightning?
Options:
(a) The same as the lightning
(b) Half that of the lightning
(c) Zero
(d) A quarter of the lightning