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Electromagnetic Induction — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
Question
A 100% efficient transformer has 100 turns in the primary and 25 turns in its secondary coil. If the current in the secondary coil is 4 amp, then the current in the primary coil is(a) 1 amp (b) 4 amp(c) 8 amp (d) 16 amp
       
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Answer

(a) 1 amp 

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