Electricity

Question

How come when a group of people holding hands touch a fence, why does everyone receive an electric shock, surely the electricity should ground on the first person and he should be the only one electrocuted. 

Answer 1

You are correct that the charge received would like to return to ground which is best to be a large conductor with an abundant source of charge. BUT since most people are wearing shoes that insulate them from ground, then all the people holding hands will be "floating" and the charges will try to get as far away from each other as possible since "like charges repel". Thus the charge will distribute to all the people approximately equally.