A transformer takes 750 W from the supply and gives 720… | StemPy Lab

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A transformer takes 750 W from the supply and gives 720… | StemPy Lab

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A transformer takes 750 W from the supply and gives 720 W to its load. What is its efficiency?

PhysicsEasyHigh School (11–12)Electricity & Magnetism › Alternating Current A-Level IB

Created by StemPy Lab

A transformer takes $750$ W from the supply and gives $720$ W to its load. What is its efficiency?

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← The windings of a transformer are made of thick copper wire. Which loss does this make smaller?A student says: a step-up transformer has ten times as many turns in its secondary as in its primary, so it gives ten times as much power as it takes. What is wrong with this? →

More onElectricity & Magnetism › Alternating Current

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