Guys, guys, guys. Magic is fun, but science is funner
*Wheels in a massive Tesla Coil* Ok, so the density of a goblins testies is this *inputs command on computer*, now find the material of the goblins testies and signal that as a conductor... *input more commands*, raise current by 3I and voltage to... 20 metre radius, or 20,000,000 Volts. Ok!
*Presses enter and lightning bolts come out of the tesla coil Zappying goblins with a full force of 60,000,000watts*