# Current calculation

I have a question of confusion in my mind, so I thought to share it with you all. when we connect a halogen lamp of 12 VAC 50 watt to 220 VAC with the help of transformer, why the current consumption of light comes out as 0.22 Amp ?

My confusion is if we calculate the current with the secondary voltage ( 12 VAC ) of the transformer then the current consumption should be higher!

$$V_{primary} I_{primary} = V_{secondary} I_{secondary}$$ so $$I_{secondary} = \frac{V_{primary} I_{primary}}{V_{secondary}}$$