Basic Sponge Venilla Cake

ingredients
egg - 2
vanilla essence 1 teaspoon
sugar 2/3 cup
oil- 1/2 cup
all purpose flour/maida-250 ml cup( 250gram)
baking powder 1 teaspoon
milk-1/4 cup
oven-160 degree Celsius for 40 minutes (800 Watts micro oven)
in gas stove- in between medium flame and low flame for 40 minutes