Step-by-step explanation:
The characteristics for a shower connected in summer and winter positions is 220 V - 2200 W / 4400 W.
It means lowest power is 2200 W and highest power is 4400 W
For lowest power,
I = electric current for summer
For highest power,
I' = electric current for winters
Hence, for lowest power, current is 10 A ad for highest power, current is 20 A.