falbum37 falbum37

18-06-2024
Physics

Answered

When a 240V electrical supply is connected to the primary winding of a transformer, a current of 40mA flows in the circuit. The secondary winding is connected to a 5 ohms resistor in which a current of 1.2A flows. Calculate (I) the power supplied to the transformer
(ii) the power dissipated in the 5 ohms resistor
(III) the efficiency of the transformer

Answer :

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