A transformer with turns ratio `(N_(1))/(N_(2))=(50)/(1)` is connected to a 120 volt AC supply. If primary and secondary circuit resistance are `1.5kOmega and 1Omega` respectively then find out power out put.

Options

A. 5.76 W
B. 11.4 W
C. 2.89 W
D. 7.56 W

Answer

A

Explanation

`(V_(2))/(V_(1))=(N_(2))/(N_(1))`
`(V_(2))/(120)=(1)/(50)`
`V_(2)=(12)/(5)`
Let transformer ideal
`P_("in")=P_("out")`
`P_("out")=(V_(2)^(2))/(R_(2))=((12//5)^(2))/(10)=(144)/(25xx1)`
`=(144)/(25)=5.76W`