Question

watch torch chemical​

Answer 1

Answer:

In order to fail light filament, the chemical used on copper is tungsten

Answer 2

Answer:

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A short circuit is an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance. This results in an excessive current flowing through the circuit. The opposite of a short circuit is an "open circuit", which is an infinite resistance between two nodes.