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When a voltage of 120V is impressed acro...

When a voltage of 120V is impressed across the primary of a transformer , the current in the primary is 1.85mA . Find the voltage across the secondary , when it delivers 150mA . The transformer has an efficiency of 95%

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Data supplied ,
`V_P = 120 V, I_P= 1.85 A , I_S = 150 mA = 150 xx 10^(-3)A `
`eta = (V_S I_S)/(V_P I_P)`
`V_S = (eta V_P I_P)/(I_S) = (0.95 xx 120 xx 1.85)/(150 xx 10^(-3) ) = 1406 V`
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