Question

. A lightning rod is a metal rod mounted on the roof of a house that is connected to a conducting cable that leaves the house and is buried in the ground. It is intended to protect the house from a lightning strike. If lightning, a sudden transfer of charge, hits the house, the charge will strike the metal rod and go through the conducting cable, instead of passing through the house, where it could start a fire or shock someone. a. Explain the purpose of this chain of conducting materials that terminates in the ground in terms of the transfer of electrons and the risk of static charge. b. Explain why doorknobs and car doors are common surfaces where shocks occur.

Answer 1

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