Statement I: Step-down transformer increases the current.
Statement II: Transformer obeys the law of conservation of energy.
In the light of the above statements, choose the most appropriate answer from the options given below.
Text Solution
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Both Statement I and Statement II are correct. If there is no loss of energy in transformer, then instantaneous output power is equal to instantaneous input power. From this we get,
So in step-up transformer voltage increases by decreasing the current. Similarly, step-down transformer decreases the voltage by increasing current. Therefore transformer simply transforms the voltage and current, obeying the law of conservation of energy.
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