Circuit symbols, Insulator and conductor keyword ...

_________ makes a buzzing sound

What circuit symbol is this?

Conductors are materials that _______ _______

Examples of electrical conductors include (plastic/ steel) and (aluminium/wood)

Conductors _______ current to flow, while electrical insulators do not ______ current to flow through

What circuit symbol is this?

What circuit symbol is this?

What circuit symbol is this and what state is it in?

Ammeter measures _ _ _ _ _ _ _ in the circuit