I'm training to be a surgeon and I will tell you from the electrical burn cases I have seen in the operating room, whatever you see on the outside, it looks MUCH worse on the inside. In that ninth picture with the dead finger and the burn on the forearm, if you opened that up you'd probably see a nice track of black, necrotic, fried muscle, tendon, and nerves connecting the two. One is certainly an entrance wound and the other an exit wound where the current left through the skin. In the OR we use electricity to burn vessels and stop bleeding because it just cooks and melts things into a solid block. Electricity can really jack things up inside.
And reading this..I take back my previous statement..that does make sense..