Wires carrying an electrical current create a ____ field​ around them. Electromagnets are useful as they can be ____ unlike a permanent magnet. ​ This means they can be used for ____, ____ and ____ To make a strong electromagnet we need ____ , ____ and a large ____

Rebríček

Vizuálny štýl

Možnosti

Prepnúť šablónu

Obnoviť automaticky uložené: ?