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  4. A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A...

A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A...

A transformer supplies 12V when connected to a
240V mains. If the transformer takes 0.120A from
the mains when used to light a 12V, 24W lamp,
what is its efficiency?

show working?
In Chemistry
2 Answers Available
Asked by chidifrankeby on 12th March, 2020
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