When defusing a bomb, why can’t you just cut all wires at once?

Question

When defusing a bomb, why can’t you just cut all wires at once?

In: 3949

Answer 1

Assuming there was a bomb which actually worked that way, what tool would you use to ensure that multiple wires were completely cut simultaneously, stopping the flow of electricity in all wires at the same instant? Keep in mind that electricity can travel 3 cm in 1 billionth of a second, and it does not even need to be flowing directly through a wire, thanks to induction. There’s no mechanical way to do it with the level of precision needed.