Question

How much power is being actually delivered by an electric heater to a cooking pan?

Answer 1

An electric stove top burner typically sits on top of the oven with 4 heating elements, normally two small and two large, and is used for heating or cooking food. The energy use of a stove top varies, smaller units will use 1000 watts while a larger heating element will go up to 3000 watts. A stove top may not use all the maximum rated power but will heat up until it reaches a set temperature, we estimate an average modern stove top element will use around 1500 watts per an hour of heating on medium to high.

Answer 2

Calculate the gain of potential energy by raising the drum 
Which is equal to 
150*9.8*20 = 29400 joules 
Power = work done /time 
= 29400/60 
= 490 j/sec

Hope it helps you.