Physics, asked by mmaleeha70, 1 month ago

A transformer is used to operate 140watt,24volt in lamp in Ac medium 240v if the current in the main wire is 0.7A then efficiency of transformer will be

Answers

Answered by rohit67872

3

Answer:

Mains voltage is 240V and mains current is

0.7amp so inpur power will be 240×0.7=168watt

But output power is given as 140 Watt so

efficinecy=(output/input)×100

% =83.33 %

Explanation:

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