A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The cu

A transformer is used to light a 24volts,70watts lamp from a
240a.c main.The current in the main cable is 0.35A.
Calculate,
(1) The efficiency of the transformer.
(2) the current in the lamp.

Question Posted / kenneth

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A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The current in the main ca..

Answer / amit and sunny

83.33% is effieciency,2.9 is current

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