When the primary of a transformer is connected to a 120 V AC mains, the current in the primary is 18.5 mA. Find the voltage across the secondary when it delivers 1.5 mA current through it, assuming the transformer to be an ideal one. State any one type of energy loss in a transformer.  - Zigya
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When the primary of a transformer is connected to a 120 V AC mains, the current in the primary is 18.5 mA. Find the voltage across the secondary when it delivers 1.5 mA current through it, assuming the transformer to be an ideal one. State any one type of energy loss in a transformer. 


For an ideal transformer,

ip x Vs = is  x Vs

Here,

 ip = 18.5 mA

Vp =120 V

tS = 1.5 mA

and VS = ?

Using values in equation, 

18.5 x 120 = 1.5 x Vs


straight V subscript straight s space equals space fraction numerator 18.5 space straight x space 120 over denominator 1.5 end fraction space equals space 1480 space volts 

Hysteresis loss is an energy loss in a transformer.

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