QJEEM21Ph05ab: JEE Main 2021 Physics - Class 12 JEEM21Ph05ab Solution: For the given circuit, comment on the type of transformer used.

Voltage across secondary coil,

= ${{Power\,across\,load} \over {Current\,pas\sin g\,through\,load}}$

$\Rightarrow {V_2} = {P \over {{I_L}}} = {{60} \over {0.11}} \Rightarrow {V_2} = 545.45$ V

Voltage across primary coil, V₁ = 220V

$\Rightarrow$ V₂ > V₁

It means that step-up transformer is used.